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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.52 by root, Mon Aug 28 16:52:51 2006 UTC vs.
Revision 1.562 by root, Sat Apr 23 04:46:26 2011 UTC

		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	package cf;	23	package cf;
		24
		25	use common::sense;
2		26
3	use Symbol;	27	use Symbol;
4	use List::Util;	28	use List::Util;
5	use Storable;	29	use Socket;
		30	use EV;
6	use Opcode;	31	use Opcode;
7	use Safe;	32	use Safe;
8	use Safe::Hole;	33	use Safe::Hole;
		34	use Storable ();
		35	use Carp ();
9		36
		37	use Guard ();
		38	use Coro ();
		39	use Coro::State;
		40	use Coro::Handle;
		41	use Coro::EV;
		42	use Coro::AnyEvent;
		43	use Coro::Timer;
		44	use Coro::Signal;
		45	use Coro::Semaphore;
		46	use Coro::SemaphoreSet;
		47	use Coro::AnyEvent;
		48	use Coro::AIO;
		49	use Coro::BDB 1.6;
		50	use Coro::Storable;
		51	use Coro::Util ();
		52
		53	use JSON::XS 2.01 ();
		54	use BDB ();
		55	use Data::Dumper;
		56	use Fcntl;
		57	use YAML::XS ();
		58	use IO::AIO ();
10	use Time::HiRes;	59	use Time::HiRes;
11	use Event;	60	use Compress::LZF;
12	$Event::Eval = 1; # no idea why this is required, but it is	61	use Digest::MD5 ();
13		62
14	use strict;	63	AnyEvent::detect;
15		64
16	_reload_1;	65	# configure various modules to our taste
		66	#
		67	$Storable::canonical = 1; # reduce rsync transfers
		68	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
17		69
		70	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		71
		72	# make sure c-lzf reinitialises itself
		73	Compress::LZF::set_serializer "Storable", "Storable::net_mstore", "Storable::mretrieve";
		74	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		75
		76	# strictly for debugging
		77	$SIG{QUIT} = sub { Carp::cluck "SIGQUIT" };
		78
		79	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		80
		81	our @ORIG_INC;
		82
18	our %COMMAND = ();	83	our %COMMAND = ();
		84	our %COMMAND_TIME = ();
		85
		86	our @EXTS = (); # list of extension package names
		87	our %EXTCMD = ();
		88	our %EXTICMD = ();
		89	our %EXT_CORO = (); # coroutines bound to extensions
		90	our %EXT_MAP = (); # pluggable maps
		91
		92	our $RELOAD; # number of reloads so far, non-zero while in reload
19	our @EVENT;	93	our @EVENT;
20	our %PROP_TYPE;	94	our @REFLECT; # set by XS
21	our %PROP_IDX;	95	our %REFLECT; # set by us
22	our $LIBDIR = maps_directory "perl";
23		96
24	our $TICK = MAX_TIME * 1e-6;	97	our $CONFDIR = confdir;
25	our $TICK_WATCHER;	98
		99	our $DATADIR = datadir;
		100	our $LIBDIR = "$DATADIR/ext";
		101	our $PODDIR = "$DATADIR/pod";
		102	our $MAPDIR = "$DATADIR/" . mapdir;
		103
		104	our $LOCALDIR = localdir;
		105	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		106	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		107	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		108	our $RANDOMDIR = "$LOCALDIR/random";
		109	our $BDBDIR = "$LOCALDIR/db";
		110	our $PIDFILE = "$LOCALDIR/pid";
		111	our $RUNTIMEFILE = "$LOCALDIR/runtime";
		112
		113	our %RESOURCE; # unused
		114
		115	our $OUTPUT_RATE_MIN = 3000;
		116	our $OUTPUT_RATE_MAX = 1000000;
		117
		118	our $MAX_LINKS = 32; # how many chained exits to follow
		119	our $VERBOSE_IO = 1;
		120
		121	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
		122	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
26	our $NEXT_TICK;	123	our $NEXT_TICK;
		124	our $USE_FSYNC = 1; # use fsync to write maps - default on
27		125
28	BEGIN {	126	our $BDB_DEADLOCK_WATCHER;
29	*CORE::GLOBAL::warn = sub {	127	our $BDB_CHECKPOINT_WATCHER;
		128	our $BDB_TRICKLE_WATCHER;
		129	our $DB_ENV;
		130
		131	our @EXTRA_MODULES = qw(pod match mapscript incloader);
		132
		133	our %CFG;
		134
		135	our $UPTIME; $UPTIME ||= time;
		136	our $RUNTIME;
		137	our $NOW;
		138
		139	our (%PLAYER, %PLAYER_LOADING); # all users
		140	our (%MAP, %MAP_LOADING ); # all maps
		141	our $LINK_MAP; # the special {link} map, which is always available
		142
		143	# used to convert map paths into valid unix filenames by replacing / by ∕
		144	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		145
		146	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		147	our $LOADAVG; # same thing, but with alpha-smoothing
		148	our $JITTER; # average jitter
		149	our $TICK_START; # for load detecting purposes
		150
		151	our @POST_INIT;
		152
		153	our $REATTACH_ON_RELOAD; # set to true to force object reattach on reload (slow)
		154	our $REALLY_UNLOOP; # never set to true, please :)
		155
		156	binmode STDOUT;
		157	binmode STDERR;
		158
		159	# read virtual server time, if available
		160	unless ($RUNTIME || !-e $RUNTIMEFILE) {
		161	open my $fh, "<", $RUNTIMEFILE
		162	or die "unable to read $RUNTIMEFILE file: $!";
		163	$RUNTIME = <$fh> + 0.;
		164	}
		165
		166	eval "sub TICK() { $TICK } 1" or die;
		167
		168	mkdir $_
		169	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		170
		171	our $EMERGENCY_POSITION;
		172
		173	sub cf::map::normalise;
		174
		175	sub in_main() {
		176	$Coro::current == $Coro::main
		177	}
		178
		179	#############################################################################
		180
		181	%REFLECT = ();
		182	for (@REFLECT) {
		183	my $reflect = JSON::XS::decode_json $_;
		184	$REFLECT{$reflect->{class}} = $reflect;
		185	}
		186
		187	# this is decidedly evil
		188	$REFLECT{object}{flags} = { map +($_ => undef), grep $_, map /^FLAG_([A-Z0-9_]+)$/ && lc $1, keys %{"cf::"} };
		189
		190	#############################################################################
		191
		192	=head2 GLOBAL VARIABLES
		193
		194	=over 4
		195
		196	=item $cf::UPTIME
		197
		198	The timestamp of the server start (so not actually an uptime).
		199
		200	=item $cf::RUNTIME
		201
		202	The time this server has run, starts at 0 and is increased by $cf::TICK on
		203	every server tick.
		204
		205	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		206	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		207	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		208
		209	Various directories - "/etc", read-only install directory, perl-library
		210	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		211	unique-items directory, player file directory, random maps directory and
		212	database environment.
		213
		214	=item $cf::NOW
		215
		216	The time of the last (current) server tick.
		217
		218	=item $cf::TICK
		219
		220	The interval between server ticks, in seconds.
		221
		222	=item $cf::LOADAVG
		223
		224	The current CPU load on the server (alpha-smoothed), as a value between 0
		225	(none) and 1 (overloaded), indicating how much time is spent on processing
		226	objects per tick. Healthy values are < 0.5.
		227
		228	=item $cf::LOAD
		229
		230	The raw value load value from the last tick.
		231
		232	=item %cf::CFG
		233
		234	Configuration for the server, loaded from C</etc/deliantra-server/config>, or
		235	from wherever your confdir points to.
		236
		237	=item cf::wait_for_tick, cf::wait_for_tick_begin
		238
		239	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		240	returns directly I<after> the tick processing (and consequently, can only wake one thread
		241	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		242
		243	=cut
		244
		245	sub wait_for_tick();
		246	sub wait_for_tick_begin();
		247
		248	=item @cf::INVOKE_RESULTS
		249
		250	This array contains the results of the last C<invoke ()> call. When
		251	C<cf::override> is called C<@cf::INVOKE_RESULTS> is set to the parameters of
		252	that call.
		253
		254	=item %cf::REFLECT
		255
		256	Contains, for each (C++) class name, a hash reference with information
		257	about object members (methods, scalars, arrays and flags) and other
		258	metadata, which is useful for introspection.
		259
		260	=back
		261
		262	=cut
		263
		264	sub error(@) { LOG llevError, join "", @_ }
		265	sub warn (@) { LOG llevWarn , join "", @_ }
		266	sub info (@) { LOG llevInfo , join "", @_ }
		267	sub debug(@) { LOG llevDebug, join "", @_ }
		268	sub trace(@) { LOG llevTrace, join "", @_ }
		269
		270	$Coro::State::WARNHOOK = sub {
30	my $msg = join "", @_;	271	my $msg = join "", @_;
		272
31	$msg .= "\n"	273	$msg .= "\n"
32	unless $msg =~ /\n$/;	274	unless $msg =~ /\n$/;
33		275
34	print STDERR "cfperl: $msg";	276	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
35	LOG llevError, "cfperl: $msg";
36	};
37	}
38		277
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	278	LOG llevWarn, $msg;
		279	};
40		280
41	# generate property mutators	281	$Coro::State::DIEHOOK = sub {
42	sub prop_gen {	282	return unless $^S eq 0; # "eq", not "=="
43	my ($prefix, $class) = @_;
44		283
45	no strict 'refs';	284	error Carp::longmess $_[0];
46		285
47	for my $prop (keys %PROP_TYPE) {	286	if (in_main) {#d#
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;	287	error "DIEHOOK called in main context, Coro bug?\n";#d#
49	my $sub = lc $1;	288	return;#d#
		289	}#d#
50		290
51	my $type = $PROP_TYPE{$prop};	291	# kill coroutine otherwise
52	my $idx = $PROP_IDX {$prop};	292	Coro::terminate
		293	};
53		294
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {	295	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
55	$_[0]->get_property ($type, $idx)	296	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
56	};	297	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
57		298	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
58	*{"$class\::set_$sub"} = sub {	299	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
59	$_[0]->set_property ($type, $idx, $_[1]);	300	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	301	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
74		302
75	# we bless all objects into (empty) derived classes to force a method lookup	303	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	304	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	305	for my $pkg (qw(
78	no strict 'refs';	306	cf::global cf::attachable
		307	cf::object cf::object::player
		308	cf::client cf::player
		309	cf::arch cf::living
		310	cf::map cf::mapspace
		311	cf::party cf::region
		312	)) {
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	313	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	314	}
81		315
82	$Event::DIED = sub {	316	$EV::DIED = sub {
83	warn "error in event callback: @_";	317	Carp::cluck "error in event callback: @_";
84	};	318	};
85		319
86	my %ext_pkg;
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91
92	#############################################################################	320	#############################################################################
93	# utility functions
94		321
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	322	sub fork_call(&@);
96		323	sub get_slot($;$$);
97	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]
100	}
101
102	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]
105	}
106		324
107	#############################################################################	325	#############################################################################
108	# "new" plug-in system
109		326
		327	=head2 UTILITY FUNCTIONS
		328
		329	=over 4
		330
		331	=item dumpval $ref
		332
		333	=cut
		334
		335	sub dumpval {
		336	eval {
		337	local $SIG{__DIE__};
		338	my $d;
		339	if (1) {
		340	$d = new Data::Dumper([$_[0]], ["*var"]);
		341	$d->Terse(1);
		342	$d->Indent(2);
		343	$d->Quotekeys(0);
		344	$d->Useqq(1);
		345	#$d->Bless(...);
		346	$d->Seen($_[1]) if @_ > 1;
		347	$d = $d->Dump();
		348	}
		349	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		350	$d
		351	} || "[unable to dump $_[0]: '$@']";
		352	}
		353
		354	=item $scalar = load_file $path
		355
		356	Loads the given file from path and returns its contents. Croaks on error
		357	and can block.
		358
		359	=cut
		360
		361	sub load_file($) {
		362	0 <= aio_load $_[0], my $data
		363	or Carp::croak "$_[0]: $!";
		364
		365	$data
		366	}
		367
		368	=item $ref = cf::decode_json $json
		369
		370	Converts a JSON string into the corresponding perl data structure.
		371
		372	=item $json = cf::encode_json $ref
		373
		374	Converts a perl data structure into its JSON representation.
		375
		376	=cut
		377
		378	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		379
		380	sub encode_json($) { $json_coder->encode ($_[0]) }
		381	sub decode_json($) { $json_coder->decode ($_[0]) }
		382
		383	=item $ref = cf::decode_storable $scalar
		384
		385	Same as Coro::Storable::thaw, so blocks.
		386
		387	=cut
		388
		389	BEGIN { *decode_storable = \&Coro::Storable::thaw }
		390
		391	=item $ref = cf::decode_yaml $scalar
		392
		393	Same as YAML::XS::Load, but doesn't leak, because it forks (and thus blocks).
		394
		395	=cut
		396
		397	sub decode_yaml($) {
		398	fork_call { YAML::XS::Load $_[0] } @_
		399	}
		400
		401	=item $scalar = cf::unlzf $scalar
		402
		403	Same as Compress::LZF::compress, but takes server ticks into account, so
		404	blocks.
		405
		406	=cut
		407
		408	sub unlzf($) {
		409	# we assume 100mb/s minimum decompression speed (noncompressible data on a ~2ghz machine)
		410	cf::get_slot +(length $_[0]) / 100_000_000, 0, "unlzf";
		411	Compress::LZF::decompress $_[0]
		412	}
		413
		414	=item cf::post_init { BLOCK }
		415
		416	Execute the given codeblock, I<after> all extensions have been (re-)loaded,
		417	but I<before> the server starts ticking again.
		418
		419	The codeblock will have a single boolean argument to indicate whether this
		420	is a reload or not.
		421
		422	=cut
		423
		424	sub post_init(&) {
		425	push @POST_INIT, shift;
		426	}
		427
		428	sub _post_init {
		429	trace "running post_init jobs";
		430
		431	# run them in parallel...
		432
		433	my @join;
		434
		435	while () {
		436	push @join, map &Coro::async ($_, 0), @POST_INIT;
		437	@POST_INIT = ();
		438
		439	@join or last;
		440
		441	(pop @join)->join;
		442	}
		443	}
		444
		445	=item cf::lock_wait $string
		446
		447	Wait until the given lock is available. See cf::lock_acquire.
		448
		449	=item my $lock = cf::lock_acquire $string
		450
		451	Wait until the given lock is available and then acquires it and returns
		452	a L<Guard> object. If the guard object gets destroyed (goes out of scope,
		453	for example when the coroutine gets canceled), the lock is automatically
		454	returned.
		455
		456	Locks are *not* recursive, locking from the same coro twice results in a
		457	deadlocked coro.
		458
		459	Lock names should begin with a unique identifier (for example, cf::map::find
		460	uses map_find and cf::map::load uses map_load).
		461
		462	=item $locked = cf::lock_active $string
		463
		464	Return true if the lock is currently active, i.e. somebody has locked it.
		465
		466	=cut
		467
		468	our $LOCKS = new Coro::SemaphoreSet;
		469
		470	sub lock_wait($) {
		471	$LOCKS->wait ($_[0]);
		472	}
		473
		474	sub lock_acquire($) {
		475	$LOCKS->guard ($_[0])
		476	}
		477
		478	sub lock_active($) {
		479	$LOCKS->count ($_[0]) < 1
		480	}
		481
		482	sub freeze_mainloop {
		483	tick_inhibit_inc;
		484
		485	&Guard::guard (\&tick_inhibit_dec);
		486	}
		487
		488	=item cf::periodic $interval, $cb
		489
		490	Like EV::periodic, but randomly selects a starting point so that the actions
		491	get spread over time.
		492
		493	=cut
		494
		495	sub periodic($$) {
		496	my ($interval, $cb) = @_;
		497
		498	my $start = rand List::Util::min 180, $interval;
		499
		500	EV::periodic $start, $interval, 0, $cb
		501	}
		502
		503	=item cf::get_slot $time[, $priority[, $name]]
		504
		505	Allocate $time seconds of blocking CPU time at priority C<$priority>
		506	(default: 0): This call blocks and returns only when you have at least
		507	C<$time> seconds of cpu time till the next tick. The slot is only valid
		508	till the next cede.
		509
		510	Background jobs should use a priority les than zero, interactive jobs
		511	should use 100 or more.
		512
		513	The optional C<$name> can be used to identify the job to run. It might be
		514	used for statistical purposes and should identify the same time-class.
		515
		516	Useful for short background jobs.
		517
		518	=cut
		519
		520	our @SLOT_QUEUE;
		521	our $SLOT_QUEUE;
		522	our $SLOT_DECAY = 0.9;
		523
		524	$SLOT_QUEUE->cancel if $SLOT_QUEUE;
		525	$SLOT_QUEUE = Coro::async {
		526	$Coro::current->desc ("timeslot manager");
		527
		528	my $signal = new Coro::Signal;
		529	my $busy;
		530
		531	while () {
		532	next_job:
		533
		534	my $avail = cf::till_tick;
		535
		536	for (0 .. $#SLOT_QUEUE) {
		537	if ($SLOT_QUEUE[$_][0] <= $avail) {
		538	$busy = 0;
		539	my $job = splice @SLOT_QUEUE, $_, 1, ();
		540	$job->[2]->send;
		541	Coro::cede;
		542	goto next_job;
		543	} else {
		544	$SLOT_QUEUE[$_][0] *= $SLOT_DECAY;
		545	}
		546	}
		547
		548	if (@SLOT_QUEUE) {
		549	# we do not use wait_for_tick() as it returns immediately when tick is inactive
		550	push @cf::WAIT_FOR_TICK, $signal;
		551	$signal->wait;
		552	} else {
		553	$busy = 0;
		554	Coro::schedule;
		555	}
		556	}
		557	};
		558
		559	sub get_slot($;$$) {
		560	return if tick_inhibit || $Coro::current == $Coro::main;
		561
		562	my ($time, $pri, $name) = @_;
		563
		564	$time = clamp $time, 0.01, $TICK * .6;
		565
		566	my $sig = new Coro::Signal;
		567
		568	push @SLOT_QUEUE, [$time, $pri, $sig, $name];
		569	@SLOT_QUEUE = sort { $b->[1] <=> $a->[1] } @SLOT_QUEUE;
		570	$SLOT_QUEUE->ready;
		571	$sig->wait;
		572	}
		573
		574	=item cf::async { BLOCK }
		575
		576	Currently the same as Coro::async_pool, meaning you cannot use
		577	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		578	thing you are allowed to do is call C<prio> on it.
		579
		580	=cut
		581
		582	BEGIN { *async = \&Coro::async_pool }
		583
		584	=item cf::sync_job { BLOCK }
		585
		586	The design of Deliantra requires that the main coroutine ($Coro::main)
		587	is always able to handle events or runnable, as Deliantra is only
		588	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		589	acceptable.
		590
		591	If it must be done, put the blocking parts into C<sync_job>. This will run
		592	the given BLOCK in another coroutine while waiting for the result. The
		593	server will be frozen during this time, so the block should either finish
		594	fast or be very important.
		595
		596	=cut
		597
		598	sub sync_job(&) {
		599	my ($job) = @_;
		600
		601	if (in_main) {
		602	my $time = AE::time;
		603
		604	# this is the main coro, too bad, we have to block
		605	# till the operation succeeds, freezing the server :/
		606
		607	#LOG llevError, Carp::longmess "sync job";#d#
		608
		609	my $freeze_guard = freeze_mainloop;
		610
		611	my $busy = 1;
		612	my @res;
		613
		614	(async {
		615	$Coro::current->desc ("sync job coro");
		616	@res = eval { $job->() };
		617	error $@ if $@;
		618	undef $busy;
		619	})->prio (Coro::PRIO_MAX);
		620
		621	while ($busy) {
		622	if (Coro::nready) {
		623	Coro::cede_notself;
		624	} else {
		625	EV::loop EV::LOOP_ONESHOT;
		626	}
		627	}
		628
		629	my $time = AE::time - $time;
		630
		631	$TICK_START += $time; # do not account sync jobs to server load
		632
		633	wantarray ? @res : $res[0]
		634	} else {
		635	# we are in another coroutine, how wonderful, everything just works
		636
		637	$job->()
		638	}
		639	}
		640
		641	=item $coro = cf::async_ext { BLOCK }
		642
		643	Like async, but this coro is automatically being canceled when the
		644	extension calling this is being unloaded.
		645
		646	=cut
		647
		648	sub async_ext(&) {
		649	my $cb = shift;
		650
		651	my $coro = &Coro::async ($cb);
		652
		653	$coro->on_destroy (sub {
		654	delete $EXT_CORO{$coro+0};
		655	});
		656	$EXT_CORO{$coro+0} = $coro;
		657
		658	$coro
		659	}
		660
		661	=item fork_call { }, @args
		662
		663	Executes the given code block with the given arguments in a seperate
		664	process, returning the results. Everything must be serialisable with
		665	Coro::Storable. May, of course, block. Note that the executed sub may
		666	never block itself or use any form of event handling.
		667
		668	=cut
		669
		670	sub post_fork {
		671	reset_signals;
		672	}
		673
		674	sub fork_call(&@) {
		675	my ($cb, @args) = @_;
		676
		677	# we seemingly have to make a local copy of the whole thing,
		678	# otherwise perl prematurely frees the stuff :/
		679	# TODO: investigate and fix (likely this will be rather laborious)
		680
		681	my @res = Coro::Util::fork_eval {
		682	cf::post_fork;
		683	&$cb
		684	} @args;
		685
		686	wantarray ? @res : $res[-1]
		687	}
		688
		689	sub objinfo {
		690	(
		691	"counter value" => cf::object::object_count,
		692	"objects created" => cf::object::create_count,
		693	"objects destroyed" => cf::object::destroy_count,
		694	"freelist size" => cf::object::free_count,
		695	"allocated objects" => cf::object::objects_size,
		696	"active objects" => cf::object::actives_size,
		697	)
		698	}
		699
		700	=item $coin = coin_from_name $name
		701
		702	=cut
		703
		704	our %coin_alias = (
		705	"silver" => "silvercoin",
		706	"silvercoin" => "silvercoin",
		707	"silvercoins" => "silvercoin",
		708	"gold" => "goldcoin",
		709	"goldcoin" => "goldcoin",
		710	"goldcoins" => "goldcoin",
		711	"platinum" => "platinacoin",
		712	"platinumcoin" => "platinacoin",
		713	"platinumcoins" => "platinacoin",
		714	"platina" => "platinacoin",
		715	"platinacoin" => "platinacoin",
		716	"platinacoins" => "platinacoin",
		717	"royalty" => "royalty",
		718	"royalties" => "royalty",
		719	);
		720
		721	sub coin_from_name($) {
		722	$coin_alias{$_[0]}
		723	? cf::arch::find $coin_alias{$_[0]}
		724	: undef
		725	}
		726
		727	=item $value = cf::db_get $family => $key
		728
		729	Returns a single value from the environment database.
		730
		731	=item cf::db_put $family => $key => $value
		732
		733	Stores the given C<$value> in the family. It can currently store binary
		734	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		735
		736	=item $db = cf::db_table "name"
		737
		738	Create and/or open a new database table. The string must not be "db" and must be unique
		739	within each server.
		740
		741	=cut
		742
		743	sub db_table($) {
		744	cf::error "db_get called from main context"
		745	if $Coro::current == $Coro::main;
		746
		747	my ($name) = @_;
		748	my $db = BDB::db_create $DB_ENV;
		749
		750	eval {
		751	$db->set_flags (BDB::CHKSUM);
		752
		753	utf8::encode $name;
		754	BDB::db_open $db, undef, $name, undef, BDB::BTREE,
		755	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		756	cf::cleanup "db_open(db): $!" if $!;
		757	};
		758	cf::cleanup "db_open(db): $@" if $@;
		759
		760	$db
		761	}
		762
		763	our $DB;
		764
		765	sub db_init {
		766	$DB ||= db_table "db";
		767	}
		768
		769	sub db_get($$) {
		770	my $key = "$_[0]/$_[1]";
		771
		772	cf::error "db_get called from main context"
		773	if $Coro::current == $Coro::main;
		774
		775	BDB::db_get $DB, undef, $key, my $data;
		776
		777	$! ? ()
		778	: $data
		779	}
		780
		781	sub db_put($$$) {
		782	BDB::dbreq_pri 4;
		783	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		784	}
		785
		786	=item cf::cache $id => [$paths...], $processversion => $process
		787
		788	Generic caching function that returns the value of the resource $id,
		789	caching and regenerating as required.
		790
		791	This function can block.
		792
		793	=cut
		794
		795	sub cache {
		796	my ($id, $src, $processversion, $process) = @_;
		797
		798	my $meta =
		799	join "\x00",
		800	$processversion,
		801	map {
		802	aio_stat $_
		803	and Carp::croak "$_: $!";
		804
		805	($_, (stat _)[7,9])
		806	} @$src;
		807
		808	my $dbmeta = db_get cache => "$id/meta";
		809	if ($dbmeta ne $meta) {
		810	# changed, we may need to process
		811
		812	my @data;
		813	my $md5;
		814
		815	for (0 .. $#$src) {
		816	$data[$_] = load_file $src->[$_];
		817	}
		818
		819	# if processing is expensive, check
		820	# checksum first
		821	if (1) {
		822	$md5 =
		823	join "\x00",
		824	$processversion,
		825	map {
		826	cf::cede_to_tick;
		827	($src->[$_], Digest::MD5::md5_hex $data[$_])
		828	} 0.. $#$src;
		829
		830
		831	my $dbmd5 = db_get cache => "$id/md5";
		832	if ($dbmd5 eq $md5) {
		833	db_put cache => "$id/meta", $meta;
		834
		835	return db_get cache => "$id/data";
		836	}
		837	}
		838
		839	my $t1 = Time::HiRes::time;
		840	my $data = $process->(\@data);
		841	my $t2 = Time::HiRes::time;
		842
		843	info "cache: '$id' processed in ", $t2 - $t1, "s\n";
		844
		845	db_put cache => "$id/data", $data;
		846	db_put cache => "$id/md5" , $md5;
		847	db_put cache => "$id/meta", $meta;
		848
		849	return $data;
		850	}
		851
		852	db_get cache => "$id/data"
		853	}
		854
		855	=item cf::datalog type => key => value, ...
		856
		857	Log a datalog packet of the given type with the given key-value pairs.
		858
		859	=cut
		860
		861	sub datalog($@) {
		862	my ($type, %kv) = @_;
		863	info "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		864	}
		865
		866	=back
		867
		868	=cut
		869
		870	#############################################################################
		871
		872	=head2 ATTACHABLE OBJECTS
		873
		874	Many objects in deliantra are so-called attachable objects. That means you can
		875	attach callbacks/event handlers (a collection of which is called an "attachment")
		876	to it. All such attachable objects support the following methods.
		877
		878	In the following description, CLASS can be any of C<global>, C<object>
		879	C<player>, C<client> or C<map> (i.e. the attachable objects in
		880	Deliantra).
		881
		882	=over 4
		883
110	=item $object->attach ($attachment, key => $value...)	884	=item $attachable->attach ($attachment, key => $value...)
111		885
112	Attach a pre-registered attachment to an object.	886	=item $attachable->detach ($attachment)
113		887
114	=item $player->attach ($attachment, key => $value...)	888	Attach/detach a pre-registered attachment to a specific object and give it
		889	the specified key/value pairs as arguments.
115		890
116	Attach a pre-registered attachment to a player.	891	Example, attach a minesweeper attachment to the given object, making it a
		892	10x10 minesweeper game:
117		893
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	894	$obj->attach (minesweeper => width => 10, height => 10);
119		895
120	Attach a pre-registered attachment to a map.	896	=item $bool = $attachable->attached ($name)
121		897
122	=item cf::attach_global ...	898	Checks wether the named attachment is currently attached to the object.
123		899
124	Attach handlers for global events.	900	=item cf::CLASS->attach ...
125		901
126	This and all following C<attach_*>-functions expect any number of the	902	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	903
		904	Define an anonymous attachment and attach it to all objects of the given
		905	CLASS. See the next function for an explanation of its arguments.
		906
		907	You can attach to global events by using the C<cf::global> class.
		908
		909	Example, log all player logins:
		910
		911	cf::player->attach (
		912	on_login => sub {
		913	my ($pl) = @_;
		914	...
		915	},
		916	);
		917
		918	Example, attach to the jeweler skill:
		919
		920	cf::object->attach (
		921	type => cf::SKILL,
		922	subtype => cf::SK_JEWELER,
		923	on_use_skill => sub {
		924	my ($sk, $ob, $part, $dir, $msg) = @_;
		925	...
		926	},
		927	);
		928
		929	=item cf::CLASS::attachment $name, ...
		930
		931	Register an attachment by C<$name> through which attachable objects of the
		932	given CLASS can refer to this attachment.
		933
		934	Some classes such as deliantra maps and objects can specify attachments
		935	that are attached at load/instantiate time, thus the need for a name.
		936
		937	These calls expect any number of the following handler/hook descriptions:
128		938
129	=over 4	939	=over 4
130		940
131	=item prio => $number	941	=item prio => $number
132		942
…		…
134	by another C<prio> setting). Lower priority handlers get executed	944	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	945	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	946	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	947	unless you know what you are doing.
138		948
		949	=item type => $type
		950
		951	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		952	given type of objects only (the additional parameter C<subtype> can be
		953	used to further limit to the given subtype).
		954
139	=item on_I<event> => \&cb	955	=item on_I<event> => \&cb
140		956
141	Call the given code reference whenever the named event happens (event is	957	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	958	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	959	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	968	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	969	object/class are recognised.
154		970
155	=back	971	=back
156		972
157	=item cf::attach_to_type $object_type, $subtype, ...	973	Example, define an attachment called "sockpuppet" that calls the given
		974	event handler when a monster attacks:
158		975
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	976	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	977	on_skill_attack => sub {
161	type.	978	my ($self, $victim) = @_;
		979	...
		980	}
		981	}
162		982
163	=item cf::attach_to_objects ...	983	=item $attachable->valid
164		984
165	Attach handlers to all objects. Do not use this except for debugging or	985	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	986	C-level object still exists. If you try to access an object that has no
167	the game.	987	valid C counterpart anymore you get an exception at runtime. This method
168		988	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	989	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178
179	Register an attachment by name through which objects can refer to this
180	attachment.
181
182	=item cf:register_map_attachment $name, ...
183
184	Register an attachment by name through which maps can refer to this
185	attachment.
186		990
187	=cut	991	=cut
188		992
189	# the following variables are defined in .xs and must not be re-created	993	# the following variables are defined in .xs and must not be re-created
190	our @CB_GLOBAL = (); # registry for all global events	994	our @CB_GLOBAL = (); # registry for all global events
		995	our @CB_ATTACHABLE = (); # registry for all attachables
191	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	996	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
192	our @CB_PLAYER = ();	997	our @CB_PLAYER = ();
		998	our @CB_CLIENT = ();
193	our @CB_TYPE = (); # registry for type (cf-object class) based events	999	our @CB_TYPE = (); # registry for type (cf-object class) based events
194	our @CB_MAP = ();	1000	our @CB_MAP = ();
195		1001
196	my %attachment;	1002	my %attachment;
197		1003
		1004	sub cf::attachable::thawer_merge {
		1005	# simply override everything except _meta
		1006	local $_[0]{_meta};
		1007	%{$_[0]} = %{$_[1]};
		1008	}
		1009
198	sub _attach_cb($\%$$$) {	1010	sub _attach_cb($$$$) {
199	my ($registry, $undo, $event, $prio, $cb) = @_;	1011	my ($registry, $event, $prio, $cb) = @_;
200		1012
201	use sort 'stable';	1013	use sort 'stable';
202		1014
203	$cb = [$prio, $cb];	1015	$cb = [$prio, $cb];
204		1016
205	@{$registry->[$event]} = sort	1017	@{$registry->[$event]} = sort
206	{ $a->[0] cmp $b->[0] }	1018	{ $a->[0] cmp $b->[0] }
207	@{$registry->[$event] || []}, $cb;	1019	@{$registry->[$event] || []}, $cb;
208
209	push @{$undo->{cb}}, [$event, $cb];
210	}	1020	}
		1021
		1022	# hack
		1023	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
211		1024
212	# attach handles attaching event callbacks	1025	# attach handles attaching event callbacks
213	# the only thing the caller has to do is pass the correct	1026	# the only thing the caller has to do is pass the correct
214	# registry (== where the callback attaches to).	1027	# registry (== where the callback attaches to).
215	sub _attach(\@$@) {	1028	sub _attach {
216	my ($registry, $klass, @arg) = @_;	1029	my ($registry, $klass, @arg) = @_;
217		1030
		1031	my $object_type;
218	my $prio = 0;	1032	my $prio = 0;
219
220	my %undo = (
221	registry => $registry,
222	cb => [],
223	);
224
225	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	1033	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		1034
		1035	#TODO: get rid of this hack
		1036	if ($attachable_klass{$klass}) {
		1037	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		1038	}
226		1039
227	while (@arg) {	1040	while (@arg) {
228	my $type = shift @arg;	1041	my $type = shift @arg;
229		1042
230	if ($type eq "prio") {	1043	if ($type eq "prio") {
231	$prio = shift @arg;	1044	$prio = shift @arg;
232		1045
		1046	} elsif ($type eq "type") {
		1047	$object_type = shift @arg;
		1048	$registry = $CB_TYPE[$object_type] ||= [];
		1049
		1050	} elsif ($type eq "subtype") {
		1051	defined $object_type or Carp::croak "subtype specified without type";
		1052	my $object_subtype = shift @arg;
		1053	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		1054
233	} elsif ($type eq "package") {	1055	} elsif ($type eq "package") {
234	my $pkg = shift @arg;	1056	my $pkg = shift @arg;
235		1057
236	while (my ($name, $id) = each %cb_id) {	1058	while (my ($name, $id) = each %cb_id) {
237	if (my $cb = $pkg->can ($name)) {	1059	if (my $cb = $pkg->can ($name)) {
238	_attach_cb $registry, %undo, $id, $prio, $cb;	1060	_attach_cb $registry, $id, $prio, $cb;
239	}	1061	}
240	}	1062	}
241		1063
242	} elsif (exists $cb_id{$type}) {	1064	} elsif (exists $cb_id{$type}) {
243	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	1065	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
244		1066
245	} elsif (ref $type) {	1067	} elsif (ref $type) {
246	warn "attaching objects not supported, ignoring.\n";	1068	error "attaching objects not supported, ignoring.\n";
247		1069
248	} else {	1070	} else {
249	shift @arg;	1071	shift @arg;
250	warn "attach argument '$type' not supported, ignoring.\n";	1072	error "attach argument '$type' not supported, ignoring.\n";
251	}	1073	}
252	}	1074	}
253
254	\%undo
255	}	1075	}
256		1076
257	sub _attach_attachment {	1077	sub _object_attach {
258	my ($obj, $name, %arg) = @_;	1078	my ($obj, $name, %arg) = @_;
259		1079
260	my $res;	1080	return if exists $obj->{_attachment}{$name};
261		1081
262	if (my $attach = $attachment{$name}) {	1082	if (my $attach = $attachment{$name}) {
263	my $registry = $obj->registry;	1083	my $registry = $obj->registry;
264		1084
265	for (@$attach) {	1085	for (@$attach) {
266	my ($klass, @attach) = @$_;	1086	my ($klass, @attach) = @$_;
267	$res = _attach @$registry, $klass, @attach;	1087	_attach $registry, $klass, @attach;
268	}	1088	}
269		1089
270	$obj->{$name} = \%arg;	1090	$obj->{$name} = \%arg;
271	} else {	1091	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	1092	info "object uses attachment '$name' which is not available, postponing.\n";
273	}	1093	}
274		1094
275	$obj->{_attachment}{$name} = undef;	1095	$obj->{_attachment}{$name} = undef;
276
277	$res->{attachment} = $name;
278	$res
279	}	1096	}
280		1097
281	sub cf::object::attach {	1098	sub cf::attachable::attach {
		1099	if (ref $_[0]) {
		1100	_object_attach @_;
		1101	} else {
		1102	_attach shift->_attach_registry, @_;
		1103	}
		1104	_recalc_want;
		1105	};
		1106
		1107	# all those should be optimised
		1108	sub cf::attachable::detach {
282	my ($obj, $name, %arg) = @_;	1109	my ($obj, $name) = @_;
283		1110
284	_attach_attachment $obj, $name, %arg;	1111	if (ref $obj) {
285	}	1112	delete $obj->{_attachment}{$name};
		1113	reattach ($obj);
		1114	} else {
		1115	Carp::croak "cannot, currently, detach class attachments";
		1116	}
		1117	_recalc_want;
		1118	};
286		1119
287	sub cf::player::attach {	1120	sub cf::attachable::attached {
288	my ($obj, $name, %arg) = @_;	1121	my ($obj, $name) = @_;
289		1122
290	_attach_attachment $obj, $name, %arg;	1123	exists $obj->{_attachment}{$name}
291	}	1124	}
292		1125
293	sub cf::map::attach {	1126	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
294	my ($obj, $name, %arg) = @_;	1127	eval "#line " . __LINE__ . " 'cf.pm'
		1128	sub cf::\L$klass\E::_attach_registry {
		1129	(\\\@CB_$klass, KLASS_$klass)
		1130	}
295		1131
296	_attach_attachment $obj, $name, %arg;	1132	sub cf::\L$klass\E::attachment {
297	}
298
299	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}
302
303	sub attach_to_type {
304	my $type = shift;
305	my $subtype = shift;
306
307	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
308	}
309
310	sub attach_to_objects {
311	_attach @CB_OBJECT, KLASS_OBJECT, @_
312	}
313
314	sub attach_to_players {
315	_attach @CB_PLAYER, KLASS_PLAYER, @_
316	}
317
318	sub attach_to_maps {
319	_attach @CB_MAP, KLASS_MAP, @_
320	}
321
322	sub register_attachment {
323	my $name = shift;	1133	my \$name = shift;
324		1134
325	$attachment{$name} = [[KLASS_OBJECT, @_]];
326	}
327
328	sub register_map_attachment {
329	my $name = shift;
330
331	$attachment{$name} = [[KLASS_MAP, @_]];	1135	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		1136	}
		1137	";
		1138	die if $@;
332	}	1139	}
333		1140
334	our $override;	1141	our $override;
335	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	1142	our @INVOKE_RESULTS = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
336		1143
337	sub override {	1144	sub override {
338	$override = 1;	1145	$override = 1;
339	@invoke_results = ();	1146	@INVOKE_RESULTS = (@_);
340	}	1147	}
341		1148
342	sub do_invoke {	1149	sub do_invoke {
343	my $event = shift;	1150	my $event = shift;
344	my $callbacks = shift;	1151	my $callbacks = shift;
345		1152
346	@invoke_results = ();	1153	@INVOKE_RESULTS = ();
347		1154
348	local $override;	1155	local $override;
349		1156
350	for (@$callbacks) {	1157	for (@$callbacks) {
351	eval { &{$_->[1]} };	1158	eval { &{$_->[1]} };
352		1159
353	if ($@) {	1160	if ($@) {
354	warn "$@";
355	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	1161	error "$@", "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
356	override;	1162	override;
357	}	1163	}
358		1164
359	return 1 if $override;	1165	return 1 if $override;
360	}	1166	}
361		1167
362	0	1168	0
363	}	1169	}
		1170
		1171	=item $bool = cf::global->invoke (EVENT_CLASS_XXX, ...)
		1172
		1173	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		1174
		1175	Generate an object-specific event with the given arguments.
		1176
		1177	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		1178	removed in future versions), and there is no public API to access override
		1179	results (if you must, access C<@cf::INVOKE_RESULTS> directly).
		1180
		1181	=back
		1182
		1183	=cut
364		1184
365	#############################################################################	1185	#############################################################################
366	# object support	1186	# object support
367		1187
368	sub instantiate {	1188	sub _object_equal($$);
		1189	sub _object_equal($$) {
		1190	my ($a, $b) = @_;
		1191
		1192	return 0 unless (ref $a) eq (ref $b);
		1193
		1194	if ("HASH" eq ref $a) {
		1195	my @ka = keys %$a;
		1196	my @kb = keys %$b;
		1197
		1198	return 0 if @ka != @kb;
		1199
		1200	for (0 .. $#ka) {
		1201	return 0 unless $ka[$_] eq $kb[$_];
		1202	return 0 unless _object_equal $a->{$ka[$_]}, $b->{$kb[$_]};
		1203	}
		1204
		1205	} elsif ("ARRAY" eq ref $a) {
		1206
		1207	return 0 if @$a != @$b;
		1208
		1209	for (0 .. $#$a) {
		1210	return 0 unless _object_equal $a->[$_], $b->[$_];
		1211	}
		1212
		1213	} elsif ($a ne $b) {
		1214	return 0;
		1215	}
		1216
		1217	1
		1218	}
		1219
		1220	our $SLOW_MERGES;#d#
		1221	sub _can_merge {
369	my ($obj, $data) = @_;	1222	my ($ob1, $ob2) = @_;
370		1223
371	$data = from_json $data;	1224	++$SLOW_MERGES;#d#
372		1225
373	for (@$data) {	1226	# we do the slow way here
374	my ($name, $args) = @$_;	1227	return _object_equal $ob1, $ob2
375
376	$obj->attach ($name, %{$args || {} });
377	}
378	}	1228	}
379		1229
380	# basically do the same as instantiate, without calling instantiate
381	sub reattach {	1230	sub reattach {
		1231	# basically do the same as instantiate, without calling instantiate
382	my ($obj) = @_;	1232	my ($obj) = @_;
		1233
		1234	# no longer needed after getting rid of delete_package?
		1235	#bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		1236
383	my $registry = $obj->registry;	1237	my $registry = $obj->registry;
384		1238
385	@$registry = ();	1239	@$registry = ();
386		1240
387	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	1241	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
388		1242
389	for my $name (keys %{ $obj->{_attachment} || {} }) {	1243	for my $name (keys %{ $obj->{_attachment} || {} }) {
390	if (my $attach = $attachment{$name}) {	1244	if (my $attach = $attachment{$name}) {
391	for (@$attach) {	1245	for (@$attach) {
392	my ($klass, @attach) = @$_;	1246	my ($klass, @attach) = @$_;
393	_attach @$registry, $klass, @attach;	1247	_attach $registry, $klass, @attach;
394	}	1248	}
395	} else {	1249	} else {
396	warn "object uses attachment '$name' that is not available, postponing.\n";	1250	info "object uses attachment '$name' that is not available, postponing.\n";
397	}	1251	}
398	}	1252	}
399	}	1253	}
400		1254
401	sub object_freezer_save {	1255	cf::attachable->attach (
402	my ($filename, $objs) = @_;
403
404	if (@$objs) {
405	open my $fh, ">:raw", "$filename.pst~";
406	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
407	close $fh;
408	chmod SAVE_MODE, "$filename.pst~";
409	rename "$filename.pst~", "$filename.pst";
410	} else {
411	unlink "$filename.pst";
412	}
413
414	chmod SAVE_MODE, "$filename~";
415	rename "$filename~", $filename;
416	}
417
418	sub object_thawer_load {
419	my ($filename) = @_;
420
421	open my $fh, "<:raw:perlio", "$filename.pst"
422	or return;
423
424	eval { local $/; (Storable::thaw <$fh>)->{objs} }
425	}
426
427	attach_to_objects
428	prio => -1000000,	1256	prio => -1000000,
		1257	on_instantiate => sub {
		1258	my ($obj, $data) = @_;
		1259
		1260	$data = decode_json $data;
		1261
		1262	for (@$data) {
		1263	my ($name, $args) = @$_;
		1264
		1265	$obj->attach ($name, %{$args || {} });
		1266	}
		1267	},
		1268	on_reattach => \&reattach,
429	on_clone => sub {	1269	on_clone => sub {
430	my ($src, $dst) = @_;	1270	my ($src, $dst) = @_;
431		1271
432	@{$dst->registry} = @{$src->registry};	1272	@{$dst->registry} = @{$src->registry};
433		1273
434	%$dst = %$src;	1274	%$dst = %$src;
435		1275
436	%{$dst->{_attachment}} = %{$src->{_attachment}}	1276	%{$dst->{_attachment}} = %{$src->{_attachment}}
437	if exists $src->{_attachment};	1277	if exists $src->{_attachment};
438	},	1278	},
439	;	1279	);
		1280
		1281	sub object_freezer_save {
		1282	my ($filename, $rdata, $objs) = @_;
		1283
		1284	sync_job {
		1285	if (length $$rdata) {
		1286	utf8::decode (my $decname = $filename);
		1287	trace sprintf "saving %s (%d,%d)\n",
		1288	$decname, length $$rdata, scalar @$objs
		1289	if $VERBOSE_IO;
		1290
		1291	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		1292	aio_chmod $fh, SAVE_MODE;
		1293	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		1294	if ($cf::USE_FSYNC) {
		1295	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1296	aio_fsync $fh;
		1297	}
		1298	aio_close $fh;
		1299
		1300	if (@$objs) {
		1301	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		1302	aio_chmod $fh, SAVE_MODE;
		1303	my $data = Coro::Storable::nfreeze { version => 1, objs => $objs };
		1304	aio_write $fh, 0, (length $data), $data, 0;
		1305	if ($cf::USE_FSYNC) {
		1306	aio_sync_file_range $fh, 0, 0, IO::AIO::SYNC_FILE_RANGE_WAIT_BEFORE | IO::AIO::SYNC_FILE_RANGE_WRITE | IO::AIO::SYNC_FILE_RANGE_WAIT_AFTER;
		1307	aio_fsync $fh;
		1308	}
		1309	aio_close $fh;
		1310	aio_rename "$filename.pst~", "$filename.pst";
		1311	}
		1312	} else {
		1313	aio_unlink "$filename.pst";
		1314	}
		1315
		1316	aio_rename "$filename~", $filename;
		1317
		1318	$filename =~ s%/[^/]+$%%;
		1319	aio_pathsync $filename if $cf::USE_FSYNC;
		1320	} else {
		1321	error "unable to save objects: $filename~: $!\n";
		1322	}
		1323	} else {
		1324	aio_unlink $filename;
		1325	aio_unlink "$filename.pst";
		1326	}
		1327	};
		1328	}
		1329
		1330	sub object_freezer_as_string {
		1331	my ($rdata, $objs) = @_;
		1332
		1333	use Data::Dumper;
		1334
		1335	$$rdata . Dumper $objs
		1336	}
		1337
		1338	sub object_thawer_load {
		1339	my ($filename) = @_;
		1340
		1341	my ($data, $av);
		1342
		1343	(aio_load $filename, $data) >= 0
		1344	or return;
		1345
		1346	unless (aio_stat "$filename.pst") {
		1347	(aio_load "$filename.pst", $av) >= 0
		1348	or return;
		1349
		1350	my $st = eval { Coro::Storable::thaw $av };
		1351	$av = $st->{objs};
		1352	}
		1353
		1354	utf8::decode (my $decname = $filename);
		1355	trace sprintf "loading %s (%d,%d)\n",
		1356	$decname, length $data, scalar @{$av || []}
		1357	if $VERBOSE_IO;
		1358
		1359	($data, $av)
		1360	}
		1361
		1362	=head2 COMMAND CALLBACKS
		1363
		1364	=over 4
		1365
		1366	=cut
440		1367
441	#############################################################################	1368	#############################################################################
442	# old plug-in events	1369	# command handling &c
443		1370
444	sub inject_event {	1371	=item cf::register_command $name => \&callback($ob,$args);
445	my $extension = shift;
446	my $event_code = shift;
447		1372
448	my $cb = $hook[$event_code]{$extension}	1373	Register a callback for execution when the client sends the user command
449	or return;	1374	$name.
450		1375
451	&$cb	1376	=cut
452	}
453
454	sub inject_global_event {
455	my $event = shift;
456
457	my $cb = $hook[$event]
458	or return;
459
460	List::Util::max map &$_, values %$cb
461	}
462
463	sub inject_command {
464	my ($name, $obj, $params) = @_;
465
466	for my $cmd (@{ $command{$name} }) {
467	$cmd->[1]->($obj, $params);
468	}
469
470	-1
471	}
472		1377
473	sub register_command {	1378	sub register_command {
474	my ($name, $time, $cb) = @_;	1379	my ($name, $cb) = @_;
475		1380
476	my $caller = caller;	1381	my $caller = caller;
477	#warn "registering command '$name/$time' to '$caller'";	1382	#warn "registering command '$name/$time' to '$caller'";
478		1383
479	push @{ $command{$name} }, [$time, $cb, $caller];	1384	push @{ $COMMAND{$name} }, [$caller, $cb];
480	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
481	}	1385	}
		1386
		1387	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1388
		1389	Register a callback for execution when the client sends an (synchronous)
		1390	extcmd packet. Ext commands will be processed in the order they are
		1391	received by the server, like other user commands. The first argument is
		1392	the logged-in player. Ext commands can only be processed after a player
		1393	has logged in successfully.
		1394
		1395	If the callback returns something, it is sent back as if reply was being
		1396	called.
		1397
		1398	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1399
		1400	Register a callback for execution when the client sends an (asynchronous)
		1401	exticmd packet. Exti commands are processed by the server as soon as they
		1402	are received, i.e. out of order w.r.t. other commands. The first argument
		1403	is a client socket. Exti commands can be received anytime, even before
		1404	log-in.
		1405
		1406	If the callback returns something, it is sent back as if reply was being
		1407	called.
		1408
		1409	=cut
482		1410
483	sub register_extcmd {	1411	sub register_extcmd {
484	my ($name, $cb) = @_;	1412	my ($name, $cb) = @_;
485		1413
486	my $caller = caller;	1414	$EXTCMD{$name} = $cb;
487	#warn "registering extcmd '$name' to '$caller'";
488
489	$extcmd{$name} = [$cb, $caller];
490	}	1415	}
491		1416
492	sub register {	1417	sub register_exticmd {
493	my ($base, $pkg) = @_;	1418	my ($name, $cb) = @_;
494		1419
495	#TODO	1420	$EXTICMD{$name} = $cb;
496	}	1421	}
497		1422
498	sub load_extension {	1423	use File::Glob ();
499	my ($path) = @_;
500		1424
501	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1425	cf::player->attach (
502	my $base = $1;	1426	on_unknown_command => sub {
503	my $pkg = $1;	1427	my ($pl, $name, $params) = @_;
504	$pkg =~ s/[^[:word:]]/_/g;
505	$pkg = "ext::$pkg";
506		1428
507	warn "loading '$path' into '$pkg'\n";	1429	my $cb = $COMMAND{$name}
		1430	or return;
508		1431
509	open my $fh, "<:utf8", $path	1432	for my $cmd (@$cb) {
510	or die "$path: $!";	1433	$cmd->[1]->($pl->ob, $params);
511
512	my $source =
513	"package $pkg; use strict; use utf8;\n"
514	. "#line 1 \"$path\"\n{\n"
515	. (do { local $/; <$fh> })
516	. "\n};\n1";
517
518	eval $source
519	or die "$path: $@";
520
521	push @exts, $pkg;
522	$ext_pkg{$base} = $pkg;
523
524	# no strict 'refs';
525	# @{"$pkg\::ISA"} = ext::;
526
527	register $base, $pkg;
528	}
529
530	sub unload_extension {
531	my ($pkg) = @_;
532
533	warn "removing extension $pkg\n";
534
535	# remove hooks
536	#TODO
537	# for my $idx (0 .. $#PLUGIN_EVENT) {
538	# delete $hook[$idx]{$pkg};
539	# }
540
541	# remove commands
542	for my $name (keys %command) {
543	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
544
545	if (@cb) {
546	$command{$name} = \@cb;
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
548	} else {
549	delete $command{$name};
550	delete $COMMAND{"$name\000"};
551	}
552	}
553
554	# remove extcmds
555	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
556	delete $extcmd{$name};
557	}
558
559	if (my $cb = $pkg->can ("unload")) {
560	eval {
561	$cb->($pkg);
562	1
563	} or warn "$pkg unloaded, but with errors: $@";
564	}
565
566	Symbol::delete_package $pkg;
567	}
568
569	sub load_extensions {
570	my $LIBDIR = maps_directory "perl";
571
572	for my $ext (<$LIBDIR/*.ext>) {
573	next unless -r $ext;
574	eval {
575	load_extension $ext;
576	1
577	} or warn "$ext not loaded: $@";
578	}
579	}
580
581	sub _perl_reload(&) {
582	my ($msg) = @_;
583
584	$msg->("reloading...");
585
586	eval {
587	# 1. cancel all watchers
588	$_->cancel for Event::all_watchers;
589
590	# 2. unload all extensions
591	for (@exts) {
592	$msg->("unloading <$_>");
593	unload_extension $_;
594	}
595
596	# 3. unload all modules loaded from $LIBDIR
597	while (my ($k, $v) = each %INC) {
598	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
599
600	$msg->("removing <$k>");
601	delete $INC{$k};
602
603	$k =~ s/\.pm$//;
604	$k =~ s/\//::/g;
605
606	if (my $cb = $k->can ("unload_module")) {
607	$cb->();
608	}
609
610	Symbol::delete_package $k;
611	}
612
613	# 4. get rid of safe::, as good as possible
614	Symbol::delete_package "safe::$_"
615	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
616
617	# 5. remove register_script_function callbacks
618	# TODO
619
620	# 6. unload cf.pm "a bit"
621	delete $INC{"cf.pm"};
622
623	# don't, removes xs symbols, too,
624	# and global variables created in xs
625	#Symbol::delete_package __PACKAGE__;
626
627	# 7. reload cf.pm
628	$msg->("reloading cf.pm");
629	require cf;
630	};
631	$msg->($@) if $@;
632
633	$msg->("reloaded");
634	};
635
636	sub perl_reload() {
637	_perl_reload {
638	warn $_[0];
639	print "$_[0]\n";
640	};
641	}
642
643	register_command "perl-reload", 0, sub {
644	my ($who, $arg) = @_;
645
646	if ($who->flag (FLAG_WIZ)) {
647	_perl_reload {
648	warn $_[0];
649	$who->message ($_[0]);
650	};	1434	}
		1435
		1436	cf::override;
651	}	1437	},
652	};
653
654	#############################################################################
655	# extcmd framework, basically convert ext <msg>
656	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
657
658	attach_to_players
659	on_extcmd => sub {	1438	on_extcmd => sub {
660	my ($pl, $buf) = @_;	1439	my ($pl, $buf) = @_;
661		1440
662	my $msg = eval { from_json $buf };	1441	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
663		1442
664	if (ref $msg) {	1443	if (ref $msg) {
		1444	my ($type, $reply, @payload) =
		1445	"ARRAY" eq ref $msg
		1446	? @$msg
		1447	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		1448
		1449	my @reply;
		1450
665	if (my $cb = $extcmd{$msg->{msgtype}}) {	1451	if (my $cb = $EXTCMD{$type}) {
666	if (my %reply = $cb->[0]->($pl, $msg)) {	1452	@reply = $cb->($pl, @payload);
667	$pl->ext_reply ($msg->{msgid}, %reply);	1453	}
		1454
		1455	$pl->ext_reply ($reply, @reply)
		1456	if $reply;
		1457
		1458	} else {
		1459	error "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1460	}
		1461
		1462	cf::override;
		1463	},
		1464	);
		1465
		1466	# "readahead" all extensions
		1467	sub cache_extensions {
		1468	my $grp = IO::AIO::aio_group;
		1469
		1470	add $grp IO::AIO::aio_readdirx $LIBDIR, IO::AIO::READDIR_STAT_ORDER, sub {
		1471	for (grep /\.ext$/, @{$_[0]}) {
		1472	add $grp IO::AIO::aio_load "$LIBDIR/$_", my $data;
		1473	}
		1474	};
		1475
		1476	$grp
		1477	}
		1478
		1479	sub load_extensions {
		1480	info "loading extensions...";
		1481
		1482	cf::sync_job {
		1483	my %todo;
		1484
		1485	for my $path (<$LIBDIR/*.ext>) {
		1486	next unless -r $path;
		1487
		1488	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1489	my $base = $1;
		1490	my $pkg = $1;
		1491	$pkg =~ s/[^[:word:]]/_/g;
		1492	$pkg = "ext::$pkg";
		1493
		1494	open my $fh, "<:utf8", $path
		1495	or die "$path: $!";
		1496
		1497	my $source = do { local $/; <$fh> };
		1498
		1499	my %ext = (
		1500	path => $path,
		1501	base => $base,
		1502	pkg => $pkg,
		1503	);
		1504
		1505	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1506	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1507
		1508	$ext{source} =
		1509	"package $pkg; use common::sense;\n"
		1510	. "#line 1 \"$path\"\n{\n"
		1511	. $source
		1512	. "\n};\n1";
		1513
		1514	$todo{$base} = \%ext;
		1515	}
		1516
		1517	my $pass = 0;
		1518	my %done;
		1519	while (%todo) {
		1520	my $progress;
		1521
		1522	++$pass;
		1523
		1524	ext:
		1525	while (my ($k, $v) = each %todo) {
		1526	for (split /,\s*/, $v->{meta}{depends}) {
		1527	next ext
		1528	unless exists $done{$_};
		1529	}
		1530
		1531	trace "... pass $pass, loading '$k' into '$v->{pkg}'\n";
		1532
		1533	my $active = eval $v->{source};
		1534
		1535	if (length $@) {
		1536	error "$v->{path}: $@\n";
		1537
		1538	cf::cleanup "mandatory extension '$k' failed to load, exiting."
		1539	if exists $v->{meta}{mandatory};
		1540
		1541	warn "$v->{base}: optional extension cannot be loaded, skipping.\n";
		1542	delete $todo{$k};
		1543	} else {
		1544	$done{$k} = delete $todo{$k};
		1545	push @EXTS, $v->{pkg};
		1546	$progress = 1;
		1547
		1548	info "$v->{base}: extension inactive.\n"
		1549	unless $active;
668	}	1550	}
669	}	1551	}
670	} else {	1552
671	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1553	unless ($progress) {
		1554	warn "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n";
		1555
		1556	while (my ($k, $v) = each %todo) {
		1557	cf::cleanup "mandatory extension '$k' has unresolved dependencies, exiting."
		1558	if exists $v->{meta}{mandatory};
		1559	}
		1560
		1561	last;
672	}	1562	}
673		1563	}
674	cf::override;
675	},	1564	};
676	;	1565	}
677		1566
678	#############################################################################	1567	#############################################################################
679	# load/save/clean perl data associated with a map
680		1568
681	*cf::mapsupport::on_clean = sub {	1569	=back
		1570
		1571	=head2 CORE EXTENSIONS
		1572
		1573	Functions and methods that extend core deliantra objects.
		1574
		1575	=cut
		1576
		1577	package cf::player;
		1578
		1579	use Coro::AIO;
		1580
		1581	=head3 cf::player
		1582
		1583	=over 4
		1584
		1585	=item cf::player::num_playing
		1586
		1587	Returns the official number of playing players, as per the Crossfire metaserver rules.
		1588
		1589	=cut
		1590
		1591	sub num_playing {
		1592	scalar grep
		1593	$_->ob->map
		1594	&& !$_->hidden
		1595	&& !$_->ob->flag (cf::FLAG_WIZ),
		1596	cf::player::list
		1597	}
		1598
		1599	=item cf::player::find $login
		1600
		1601	Returns the given player object, loading it if necessary (might block).
		1602
		1603	=cut
		1604
		1605	sub playerdir($) {
		1606	"$PLAYERDIR/"
		1607	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1608	}
		1609
		1610	sub path($) {
		1611	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1612
		1613	(playerdir $login) . "/playerdata"
		1614	}
		1615
		1616	sub find_active($) {
		1617	$cf::PLAYER{$_[0]}
		1618	and $cf::PLAYER{$_[0]}->active
		1619	and $cf::PLAYER{$_[0]}
		1620	}
		1621
		1622	sub exists($) {
682	my ($map) = @_;	1623	my ($login) = @_;
683		1624
684	my $path = $map->tmpname;	1625	$cf::PLAYER{$login}
685	defined $path or return;	1626	or !aio_stat path $login
686
687	unlink "$path.pst";
688	};
689
690	# old style persistent data, TODO: remove #d#
691	*cf::mapsupport::on_swapin =
692	*cf::mapsupport::on_load = sub {
693	my ($map) = @_;
694
695	my $path = $map->tmpname;
696	$path = $map->path unless defined $path;
697
698	open my $fh, "<:raw", "$path.cfperl"
699	or return; # no perl data
700
701	my $data = Storable::thaw do { local $/; <$fh> };
702
703	$data->{version} <= 1
704	or return; # too new
705
706	$map->_set_obs ($data->{obs});
707	$map->invoke (EVENT_MAP_UPGRADE);
708	};
709
710	attach_to_maps prio => -10000, package => cf::mapsupport::;
711
712	#############################################################################
713	# load/save perl data associated with player->ob objects
714
715	sub all_objects(@) {
716	@_, map all_objects ($_->inv), @_
717	}	1627	}
718		1628
719	attach_to_players	1629	sub find($) {
		1630	return $cf::PLAYER{$_[0]} || do {
		1631	my $login = $_[0];
		1632
		1633	my $guard = cf::lock_acquire "user_find:$login";
		1634
		1635	$cf::PLAYER{$_[0]} || do {
		1636	# rename old playerfiles to new ones
		1637	#TODO: remove when no longer required
		1638	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1639	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1640	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1641	aio_unlink +(playerdir $login) . "/$login.pl";
		1642
		1643	my $f = new_from_file cf::object::thawer path $login
		1644	or return;
		1645
		1646	my $pl = cf::player::load_pl $f
		1647	or return;
		1648
		1649	local $cf::PLAYER_LOADING{$login} = $pl;
		1650	$f->resolve_delayed_derefs;
		1651	$cf::PLAYER{$login} = $pl
		1652	}
		1653	}
		1654	}
		1655
		1656	cf::player->attach (
720	on_load => sub {	1657	on_load => sub {
721	my ($pl, $path) = @_;	1658	my ($pl, $path) = @_;
722		1659
723	for my $o (all_objects $pl->ob) {	1660	# restore slots saved in save, below
724	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1661	my $slots = delete $pl->{_slots};
725	$o->set_ob_key_value ("_perl_data");
726		1662
727	%$o = %{ Storable::thaw pack "H*", $value };	1663	$pl->ob->current_weapon ($slots->[0]);
		1664	$pl->combat_ob ($slots->[1]);
		1665	$pl->ranged_ob ($slots->[2]);
		1666	},
		1667	);
		1668
		1669	sub save($) {
		1670	my ($pl) = @_;
		1671
		1672	return if $pl->{deny_save};
		1673
		1674	my $path = path $pl;
		1675	my $guard = cf::lock_acquire "user_save:$path";
		1676
		1677	return if $pl->{deny_save};
		1678
		1679	aio_mkdir playerdir $pl, 0770;
		1680	$pl->{last_save} = $cf::RUNTIME;
		1681
		1682	cf::get_slot 0.01;
		1683
		1684	# save slots, to be restored later
		1685	local $pl->{_slots} = [$pl->ob->current_weapon, $pl->combat_ob, $pl->ranged_ob];
		1686
		1687	$pl->save_pl ($path);
		1688	cf::cede_to_tick;
		1689	}
		1690
		1691	sub new($) {
		1692	my ($login) = @_;
		1693
		1694	my $self = create;
		1695
		1696	$self->ob->name ($login);
		1697	$self->{deny_save} = 1;
		1698
		1699	$cf::PLAYER{$login} = $self;
		1700
		1701	$self
		1702	}
		1703
		1704	=item $player->send_msg ($channel, $msg, $color, [extra...])
		1705
		1706	=cut
		1707
		1708	sub send_msg {
		1709	my $ns = shift->ns
		1710	or return;
		1711	$ns->send_msg (@_);
		1712	}
		1713
		1714	=item $pl->quit_character
		1715
		1716	Nukes the player without looking back. If logged in, the connection will
		1717	be destroyed. May block for a long time.
		1718
		1719	=cut
		1720
		1721	sub quit_character {
		1722	my ($pl) = @_;
		1723
		1724	my $name = $pl->ob->name;
		1725
		1726	$pl->{deny_save} = 1;
		1727	$pl->password ("*"); # this should lock out the player until we have nuked the dir
		1728
		1729	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->ns;
		1730	$pl->deactivate;
		1731
		1732	my $killer = cf::arch::get "killer_quit"; $pl->killer ($killer); $killer->destroy;
		1733	$pl->invoke (cf::EVENT_PLAYER_QUIT) if $pl->ns;
		1734	ext::highscore::check ($pl->ob);
		1735
		1736	$pl->ns->destroy if $pl->ns;
		1737
		1738	my $path = playerdir $pl;
		1739	my $temp = "$path~$cf::RUNTIME~deleting~";
		1740	aio_rename $path, $temp;
		1741	delete $cf::PLAYER{$pl->ob->name};
		1742	$pl->destroy;
		1743
		1744	my $prefix = qr<^~\Q$name\E/>;
		1745
		1746	# nuke player maps
		1747	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1748
		1749	IO::AIO::aio_rmtree $temp;
		1750	}
		1751
		1752	=item $pl->kick
		1753
		1754	Kicks a player out of the game. This destroys the connection.
		1755
		1756	=cut
		1757
		1758	sub kick {
		1759	my ($pl, $kicker) = @_;
		1760
		1761	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1762	$pl->killer ("kicked");
		1763	$pl->ns->destroy;
		1764	}
		1765
		1766	=item cf::player::list_logins
		1767
		1768	Returns am arrayref of all valid playernames in the system, can take a
		1769	while and may block, so not sync_job-capable, ever.
		1770
		1771	=cut
		1772
		1773	sub list_logins {
		1774	my $dirs = aio_readdir $PLAYERDIR
		1775	or return [];
		1776
		1777	my @logins;
		1778
		1779	for my $login (@$dirs) {
		1780	my $path = path $login;
		1781
		1782	# a .pst is a dead give-away for a valid player
		1783	# if no pst file found, open and chekc for blocked users
		1784	if (aio_stat "$path.pst") {
		1785	my $fh = aio_open $path, Fcntl::O_RDONLY, 0 or next;
		1786	aio_read $fh, 0, 512, my $buf, 0 or next;
		1787	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1788	}
		1789
		1790	utf8::decode $login;
		1791	push @logins, $login;
		1792	}
		1793
		1794	\@logins
		1795	}
		1796
		1797	=item $player->maps
		1798
		1799	=item cf::player::maps $login
		1800
		1801	Returns an arrayref of map paths that are private for this
		1802	player. May block.
		1803
		1804	=cut
		1805
		1806	sub maps($) {
		1807	my ($pl) = @_;
		1808
		1809	$pl = ref $pl ? $pl->ob->name : $pl;
		1810
		1811	my $files = aio_readdir playerdir $pl
		1812	or return;
		1813
		1814	my @paths;
		1815
		1816	for (@$files) {
		1817	utf8::decode $_;
		1818	next if /\.(?:pl|pst)$/;
		1819	next unless /^$PATH_SEP/o;
		1820
		1821	push @paths, cf::map::normalise "~$pl/$_";
		1822	}
		1823
		1824	\@paths
		1825	}
		1826
		1827	=item $protocol_xml = $player->expand_cfpod ($cfpod)
		1828
		1829	Expand deliantra pod fragments into protocol xml.
		1830
		1831	=item $player->ext_reply ($msgid, @msg)
		1832
		1833	Sends an ext reply to the player.
		1834
		1835	=cut
		1836
		1837	sub ext_reply($$@) {
		1838	my ($self, $id, @msg) = @_;
		1839
		1840	$self->ns->ext_reply ($id, @msg)
		1841	}
		1842
		1843	=item $player->ext_msg ($type, @msg)
		1844
		1845	Sends an ext event to the client.
		1846
		1847	=cut
		1848
		1849	sub ext_msg($$@) {
		1850	my ($self, $type, @msg) = @_;
		1851
		1852	$self->ns->ext_msg ($type, @msg);
		1853	}
		1854
		1855	=head3 cf::region
		1856
		1857	=over 4
		1858
		1859	=cut
		1860
		1861	package cf::region;
		1862
		1863	=item cf::region::find_by_path $path
		1864
		1865	Tries to decuce the likely region for a map knowing only its path.
		1866
		1867	=cut
		1868
		1869	sub find_by_path($) {
		1870	my ($path) = @_;
		1871
		1872	$path =~ s/^~[^\/]*//; # skip ~login
		1873
		1874	my ($match, $specificity);
		1875
		1876	for my $region (list) {
		1877	if ($region->{match} && $path =~ $region->{match}) {
		1878	($match, $specificity) = ($region, $region->specificity)
		1879	if $region->specificity > $specificity;
		1880	}
		1881	}
		1882
		1883	$match
		1884	}
		1885
		1886	=back
		1887
		1888	=head3 cf::map
		1889
		1890	=over 4
		1891
		1892	=cut
		1893
		1894	package cf::map;
		1895
		1896	use Fcntl;
		1897	use Coro::AIO;
		1898
		1899	use overload
		1900	'""' => \&as_string,
		1901	fallback => 1;
		1902
		1903	our $MAX_RESET = 3600;
		1904	our $DEFAULT_RESET = 3000;
		1905
		1906	sub generate_random_map {
		1907	my ($self, $rmp) = @_;
		1908
		1909	my $lock = cf::lock_acquire "generate_random_map"; # the random map generator is NOT reentrant ATM
		1910
		1911	$self->_create_random_map ($rmp);
		1912	}
		1913
		1914	=item cf::map->register ($regex, $prio)
		1915
		1916	Register a handler for the map path matching the given regex at the
		1917	givne priority (higher is better, built-in handlers have priority 0, the
		1918	default).
		1919
		1920	=cut
		1921
		1922	sub register {
		1923	my (undef, $regex, $prio) = @_;
		1924	my $pkg = caller;
		1925
		1926	push @{"$pkg\::ISA"}, __PACKAGE__;
		1927
		1928	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1929	}
		1930
		1931	# also paths starting with '/'
		1932	$EXT_MAP{"cf::map::wrap"} = [0, qr{^(?=/)}];
		1933
		1934	sub thawer_merge {
		1935	my ($self, $merge) = @_;
		1936
		1937	# we have to keep some variables in memory intact
		1938	local $self->{path};
		1939	local $self->{load_path};
		1940
		1941	$self->SUPER::thawer_merge ($merge);
		1942	}
		1943
		1944	sub normalise {
		1945	my ($path, $base) = @_;
		1946
		1947	$path = "$path"; # make sure it's a string
		1948
		1949	$path =~ s/\.map$//;
		1950
		1951	# map plan:
		1952	#
		1953	# /! non-realised random map exit (special hack!)
		1954	# {... are special paths that are not being touched
		1955	# ?xxx/... are special absolute paths
		1956	# ?random/... random maps
		1957	# /... normal maps
		1958	# ~user/... per-player map of a specific user
		1959
		1960	$path =~ s/$PATH_SEP/\//go;
		1961
		1962	# treat it as relative path if it starts with
		1963	# something that looks reasonable
		1964	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1965	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1966
		1967	$base =~ s{[^/]+/?$}{};
		1968	$path = "$base/$path";
		1969	}
		1970
		1971	for ($path) {
		1972	redo if s{/\.?/}{/};
		1973	redo if s{/[^/]+/\.\./}{/};
		1974	}
		1975
		1976	$path
		1977	}
		1978
		1979	sub new_from_path {
		1980	my (undef, $path, $base) = @_;
		1981
		1982	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1983
		1984	$path = normalise $path, $base;
		1985
		1986	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1987	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1988	my $self = bless cf::map::new, $pkg;
		1989	$self->{path} = $path; $self->path ($path);
		1990	$self->init; # pass $1 etc.
		1991	return $self;
		1992	}
		1993	}
		1994
		1995	Carp::cluck "unable to resolve path '$path' (base '$base')";
		1996	()
		1997	}
		1998
		1999	# may re-bless or do other evil things
		2000	sub init {
		2001	my ($self) = @_;
		2002
		2003	$self
		2004	}
		2005
		2006	sub as_string {
		2007	my ($self) = @_;
		2008
		2009	"$self->{path}"
		2010	}
		2011
		2012	# the displayed name, this is a one way mapping
		2013	sub visible_name {
		2014	&as_string
		2015	}
		2016
		2017	# the original (read-only) location
		2018	sub load_path {
		2019	my ($self) = @_;
		2020
		2021	"$MAPDIR/$self->{path}.map"
		2022	}
		2023
		2024	# the temporary/swap location
		2025	sub save_path {
		2026	my ($self) = @_;
		2027
		2028	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2029	"$TMPDIR/$path.map"
		2030	}
		2031
		2032	# the unique path, undef == no special unique path
		2033	sub uniq_path {
		2034	my ($self) = @_;
		2035
		2036	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/go;
		2037	"$UNIQUEDIR/$path"
		2038	}
		2039
		2040	sub decay_objects {
		2041	my ($self) = @_;
		2042
		2043	return if $self->{deny_reset};
		2044
		2045	$self->do_decay_objects;
		2046	}
		2047
		2048	sub unlink_save {
		2049	my ($self) = @_;
		2050
		2051	utf8::encode (my $save = $self->save_path);
		2052	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		2053	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		2054	}
		2055
		2056	sub load_header_from($) {
		2057	my ($self, $path) = @_;
		2058
		2059	utf8::encode $path;
		2060	my $f = new_from_file cf::object::thawer $path
		2061	or return;
		2062
		2063	$self->_load_header ($f)
		2064	or return;
		2065
		2066	local $MAP_LOADING{$self->{path}} = $self;
		2067	$f->resolve_delayed_derefs;
		2068
		2069	$self->{load_path} = $path;
		2070
		2071	1
		2072	}
		2073
		2074	sub load_header_orig {
		2075	my ($self) = @_;
		2076
		2077	$self->load_header_from ($self->load_path)
		2078	}
		2079
		2080	sub load_header_temp {
		2081	my ($self) = @_;
		2082
		2083	$self->load_header_from ($self->save_path)
		2084	}
		2085
		2086	sub prepare_temp {
		2087	my ($self) = @_;
		2088
		2089	$self->last_access ((delete $self->{last_access})
		2090	|| $cf::RUNTIME); #d#
		2091	# safety
		2092	$self->{instantiate_time} = $cf::RUNTIME
		2093	if $self->{instantiate_time} > $cf::RUNTIME;
		2094	}
		2095
		2096	sub prepare_orig {
		2097	my ($self) = @_;
		2098
		2099	$self->{load_original} = 1;
		2100	$self->{instantiate_time} = $cf::RUNTIME;
		2101	$self->last_access ($cf::RUNTIME);
		2102	$self->instantiate;
		2103	}
		2104
		2105	sub load_header {
		2106	my ($self) = @_;
		2107
		2108	if ($self->load_header_temp) {
		2109	$self->prepare_temp;
		2110	} else {
		2111	$self->load_header_orig
		2112	or return;
		2113	$self->prepare_orig;
		2114	}
		2115
		2116	$self->{deny_reset} = 1
		2117	if $self->no_reset;
		2118
		2119	$self->default_region (cf::region::find_by_path $self->{path})
		2120	unless $self->default_region;
		2121
		2122	1
		2123	}
		2124
		2125	sub find;
		2126	sub find {
		2127	my ($path, $origin) = @_;
		2128
		2129	cf::cede_to_tick;
		2130
		2131	$path = normalise $path, $origin && $origin->path;
		2132
		2133	my $guard1 = cf::lock_acquire "map_data:$path";#d#remove
		2134	my $guard2 = cf::lock_acquire "map_find:$path";
		2135
		2136	$cf::MAP{$path} || do {
		2137	my $map = new_from_path cf::map $path
		2138	or return;
		2139
		2140	$map->{last_save} = $cf::RUNTIME;
		2141
		2142	$map->load_header
		2143	or return;
		2144
		2145	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		2146	# doing this can freeze the server in a sync job, obviously
		2147	#$cf::WAIT_FOR_TICK->wait;
		2148	undef $guard2;
		2149	undef $guard1;
		2150	$map->reset;
		2151	return find $path;
		2152	}
		2153
		2154	$cf::MAP{$path} = $map
		2155	}
		2156	}
		2157
		2158	sub pre_load { }
		2159	#sub post_load { } # XS
		2160
		2161	sub load {
		2162	my ($self) = @_;
		2163
		2164	local $self->{deny_reset} = 1; # loading can take a long time
		2165
		2166	my $path = $self->{path};
		2167
		2168	{
		2169	my $guard = cf::lock_acquire "map_data:$path";
		2170
		2171	return unless $self->valid;
		2172	return unless $self->in_memory == cf::MAP_SWAPPED;
		2173
		2174	$self->in_memory (cf::MAP_LOADING);
		2175
		2176	$self->alloc;
		2177
		2178	$self->pre_load;
		2179	cf::cede_to_tick;
		2180
		2181	if (exists $self->{load_path}) {
		2182	my $f = new_from_file cf::object::thawer $self->{load_path};
		2183	$f->skip_block;
		2184	$self->_load_objects ($f)
		2185	or return;
		2186
		2187	$self->post_load_original
		2188	if delete $self->{load_original};
		2189
		2190	if (my $uniq = $self->uniq_path) {
		2191	utf8::encode $uniq;
		2192	unless (aio_stat $uniq) {
		2193	if (my $f = new_from_file cf::object::thawer $uniq) {
		2194	$self->clear_unique_items;
		2195	$self->_load_objects ($f);
		2196	$f->resolve_delayed_derefs;
		2197	}
		2198	}
728	}	2199	}
		2200
		2201	$f->resolve_delayed_derefs;
729	}	2202	}
		2203
		2204	cf::cede_to_tick;
		2205	# now do the right thing for maps
		2206	$self->link_multipart_objects;
		2207	$self->difficulty ($self->estimate_difficulty)
		2208	unless $self->difficulty;
		2209	cf::cede_to_tick;
		2210
		2211	unless ($self->{deny_activate}) {
		2212	$self->decay_objects;
		2213	$self->fix_auto_apply;
		2214	$self->update_buttons;
		2215	cf::cede_to_tick;
		2216	$self->activate;
		2217	}
		2218
		2219	$self->{last_save} = $cf::RUNTIME;
		2220	$self->last_access ($cf::RUNTIME);
		2221
		2222	$self->in_memory (cf::MAP_ACTIVE);
730	},	2223	}
731	;
732		2224
733	#############################################################################	2225	$self->post_load;
734	# core extensions - in perl
735		2226
736	=item cf::player::exists $login	2227	1
737
738	Returns true when the given account exists.
739
740	=cut
741
742	sub cf::player::exists($) {
743	cf::player::find $_[0]
744	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
745	}	2228	}
746		2229
		2230	# customize the map for a given player, i.e.
		2231	# return the _real_ map. used by e.g. per-player
		2232	# maps to change the path to ~playername/mappath
		2233	sub customise_for {
		2234	my ($self, $ob) = @_;
		2235
		2236	return find "~" . $ob->name . "/" . $self->{path}
		2237	if $self->per_player;
		2238
		2239	# return find "?party/" . $ob->name . "/" . $self->{path}
		2240	# if $self->per_party;
		2241
		2242	$self
		2243	}
		2244
		2245	# find and load all maps in the 3x3 area around a map
		2246	sub load_neighbours {
		2247	my ($map) = @_;
		2248
		2249	my @neigh; # diagonal neighbours
		2250
		2251	for (0 .. 3) {
		2252	my $neigh = $map->tile_path ($_)
		2253	or next;
		2254	$neigh = find $neigh, $map
		2255	or next;
		2256	$neigh->load;
		2257
		2258	# now find the diagonal neighbours
		2259	push @neigh,
		2260	[$neigh->tile_path (($_ + 3) % 4), $neigh],
		2261	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		2262	}
		2263
		2264	for (grep defined $_->[0], @neigh) {
		2265	my ($path, $origin) = @$_;
		2266	my $neigh = find $path, $origin
		2267	or next;
		2268	$neigh->load;
		2269	}
		2270	}
		2271
		2272	sub find_sync {
		2273	my ($path, $origin) = @_;
		2274
		2275	return cf::LOG cf::llevError | cf::logBacktrace, "do_find_sync"
		2276	if $Coro::current == $Coro::main;
		2277
		2278	find $path, $origin
		2279	}
		2280
		2281	sub do_load_sync {
		2282	my ($map) = @_;
		2283
		2284	return cf::LOG cf::llevError | cf::logBacktrace, "do_load_sync"
		2285	if $Coro::current == $Coro::main;
		2286
		2287	$map->load;
		2288	}
		2289
		2290	our %MAP_PREFETCH;
		2291	our $MAP_PREFETCHER = undef;
		2292
		2293	sub find_async {
		2294	my ($path, $origin, $load) = @_;
		2295
		2296	$path = normalise $path, $origin && $origin->{path};
		2297
		2298	if (my $map = $cf::MAP{$path}) {
		2299	return $map if !$load || $map->in_memory == cf::MAP_ACTIVE;
		2300	}
		2301
		2302	$MAP_PREFETCH{$path} |= $load;
		2303
		2304	$MAP_PREFETCHER ||= cf::async {
		2305	$Coro::current->{desc} = "map prefetcher";
		2306
		2307	while (%MAP_PREFETCH) {
		2308	while (my ($k, $v) = each %MAP_PREFETCH) {
		2309	if (my $map = find $k) {
		2310	$map->load if $v;
		2311	}
		2312
		2313	delete $MAP_PREFETCH{$k};
		2314	}
		2315	}
		2316	undef $MAP_PREFETCHER;
		2317	};
		2318	$MAP_PREFETCHER->prio (6);
		2319
		2320	()
		2321	}
		2322
		2323	# common code, used by both ->save and ->swapout
		2324	sub _save {
		2325	my ($self) = @_;
		2326
		2327	$self->{last_save} = $cf::RUNTIME;
		2328
		2329	return unless $self->dirty;
		2330
		2331	my $save = $self->save_path; utf8::encode $save;
		2332	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2333
		2334	$self->{load_path} = $save;
		2335
		2336	return if $self->{deny_save};
		2337
		2338	local $self->{last_access} = $self->last_access;#d#
		2339
		2340	cf::async {
		2341	$Coro::current->{desc} = "map player save";
		2342	$_->contr->save for $self->players;
		2343	};
		2344
		2345	cf::get_slot 0.02;
		2346
		2347	if ($uniq) {
		2348	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		2349	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		2350	} else {
		2351	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		2352	}
		2353	}
		2354
		2355	sub save {
		2356	my ($self) = @_;
		2357
		2358	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2359
		2360	$self->_save;
		2361	}
		2362
		2363	sub swap_out {
		2364	my ($self) = @_;
		2365
		2366	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2367
		2368	return if $self->in_memory != cf::MAP_ACTIVE;
		2369	return if $self->{deny_save};
		2370	return if $self->players;
		2371
		2372	# first deactivate the map and "unlink" it from the core
		2373	$self->deactivate;
		2374	$_->clear_links_to ($self) for values %cf::MAP;
		2375	$self->in_memory (cf::MAP_SWAPPED);
		2376
		2377	# then atomically save
		2378	$self->_save;
		2379
		2380	# then free the map
		2381	$self->clear;
		2382	}
		2383
		2384	sub reset_at {
		2385	my ($self) = @_;
		2386
		2387	# TODO: safety, remove and allow resettable per-player maps
		2388	return 1e99 if $self->{deny_reset};
		2389
		2390	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		2391	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		2392
		2393	$time + $to
		2394	}
		2395
		2396	sub should_reset {
		2397	my ($self) = @_;
		2398
		2399	$self->reset_at <= $cf::RUNTIME
		2400	}
		2401
		2402	sub reset {
		2403	my ($self) = @_;
		2404
		2405	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2406
		2407	return if $self->players;
		2408
		2409	cf::trace "resetting map ", $self->path, "\n";
		2410
		2411	$self->in_memory (cf::MAP_SWAPPED);
		2412
		2413	# need to save uniques path
		2414	unless ($self->{deny_save}) {
		2415	my $uniq = $self->uniq_path; utf8::encode $uniq;
		2416
		2417	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		2418	if $uniq;
		2419	}
		2420
		2421	delete $cf::MAP{$self->path};
		2422
		2423	$self->deactivate;
		2424	$_->clear_links_to ($self) for values %cf::MAP;
		2425	$self->clear;
		2426
		2427	$self->unlink_save;
		2428	$self->destroy;
		2429	}
		2430
		2431	my $nuke_counter = "aaaa";
		2432
		2433	sub nuke {
		2434	my ($self) = @_;
		2435
		2436	{
		2437	my $lock = cf::lock_acquire "map_data:$self->{path}";
		2438
		2439	delete $cf::MAP{$self->path};
		2440
		2441	$self->unlink_save;
		2442
		2443	bless $self, "cf::map::wrap";
		2444	delete $self->{deny_reset};
		2445	$self->{deny_save} = 1;
		2446	$self->reset_timeout (1);
		2447	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		2448
		2449	$cf::MAP{$self->path} = $self;
		2450	}
		2451
		2452	$self->reset; # polite request, might not happen
		2453	}
		2454
		2455	=item $maps = cf::map::tmp_maps
		2456
		2457	Returns an arrayref with all map paths of currently instantiated and saved
		2458	maps. May block.
		2459
		2460	=cut
		2461
		2462	sub tmp_maps() {
		2463	[
		2464	map {
		2465	utf8::decode $_;
		2466	/\.map$/
		2467	? normalise $_
		2468	: ()
		2469	} @{ aio_readdir $TMPDIR or [] }
		2470	]
		2471	}
		2472
		2473	=item $maps = cf::map::random_maps
		2474
		2475	Returns an arrayref with all map paths of currently instantiated and saved
		2476	random maps. May block.
		2477
		2478	=cut
		2479
		2480	sub random_maps() {
		2481	[
		2482	map {
		2483	utf8::decode $_;
		2484	/\.map$/
		2485	? normalise "?random/$_"
		2486	: ()
		2487	} @{ aio_readdir $RANDOMDIR or [] }
		2488	]
		2489	}
		2490
		2491	=item cf::map::unique_maps
		2492
		2493	Returns an arrayref of paths of all shared maps that have
		2494	instantiated unique items. May block.
		2495
		2496	=cut
		2497
		2498	sub unique_maps() {
		2499	[
		2500	map {
		2501	utf8::decode $_;
		2502	s/\.map$//; # TODO future compatibility hack
		2503	/\.pst$/ || !/^$PATH_SEP/o # TODO unique maps apparebntly lack the .map suffix :/
		2504	? ()
		2505	: normalise $_
		2506	} @{ aio_readdir $UNIQUEDIR or [] }
		2507	]
		2508	}
		2509
		2510	=item cf::map::static_maps
		2511
		2512	Returns an arrayref if paths of all static maps (all preinstalled F<.map>
		2513	file in the shared directory excluding F</styles> and F</editor>). May
		2514	block.
		2515
		2516	=cut
		2517
		2518	sub static_maps() {
		2519	my @dirs = "";
		2520	my @maps;
		2521
		2522	while (@dirs) {
		2523	my $dir = shift @dirs;
		2524
		2525	next if $dir eq "/styles" || $dir eq "/editor";
		2526
		2527	my ($dirs, $files) = Coro::AIO::aio_scandir "$MAPDIR$dir", 2
		2528	or return;
		2529
		2530	for (@$files) {
		2531	s/\.map$// or next;
		2532	utf8::decode $_;
		2533	push @maps, "$dir/$_";
		2534	}
		2535
		2536	push @dirs, map "$dir/$_", @$dirs;
		2537	}
		2538
		2539	\@maps
		2540	}
		2541
		2542	=back
		2543
		2544	=head3 cf::object
		2545
		2546	=cut
		2547
		2548	package cf::object;
		2549
		2550	=over 4
		2551
		2552	=item $ob->inv_recursive
		2553
		2554	Returns the inventory of the object I<and> their inventories, recursively,
		2555	but I<not> the object itself.
		2556
		2557	=cut
		2558
		2559	sub inv_recursive_;
		2560	sub inv_recursive_ {
		2561	map { $_, inv_recursive_ $_->inv } @_
		2562	}
		2563
		2564	sub inv_recursive {
		2565	inv_recursive_ inv $_[0]
		2566	}
		2567
		2568	=item $ref = $ob->ref
		2569
		2570	Creates and returns a persistent reference to an object that can be stored as a string.
		2571
		2572	=item $ob = cf::object::deref ($refstring)
		2573
		2574	returns the objetc referenced by refstring. may return undef when it cnanot find the object,
		2575	even if the object actually exists. May block.
		2576
		2577	=cut
		2578
		2579	sub deref {
		2580	my ($ref) = @_;
		2581
		2582	if ($ref =~ m{^player\/(<1\.[0-9a-f]+>)/(.*)$}) {
		2583	my ($uuid, $name) = ($1, $2);
		2584	my $pl = $cf::PLAYER_LOADING{$name} || cf::player::find $name
		2585	or return;
		2586	$pl->ob->uuid eq $uuid
		2587	or return;
		2588
		2589	$pl->ob
		2590	} else {
		2591	warn "$ref: cannot resolve object reference\n";
		2592	undef
		2593	}
		2594	}
		2595
		2596	package cf;
		2597
		2598	=back
		2599
		2600	=head3 cf::object::player
		2601
		2602	=over 4
		2603
747	=item $player->reply ($npc, $msg[, $flags])	2604	=item $player_object->reply ($npc, $msg[, $flags])
748		2605
749	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2606	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
750	can be C<undef>. Does the right thing when the player is currently in a	2607	can be C<undef>. Does the right thing when the player is currently in a
751	dialogue with the given NPC character.	2608	dialogue with the given NPC character.
752		2609
753	=cut	2610	=cut
754		2611
		2612	our $SAY_CHANNEL = {
		2613	id => "say",
		2614	title => "Map",
		2615	reply => "say ",
		2616	tooltip => "Things said to and replied from NPCs near you and other players on the same map only.",
		2617	};
		2618
		2619	our $CHAT_CHANNEL = {
		2620	id => "chat",
		2621	title => "Chat",
		2622	reply => "chat ",
		2623	tooltip => "Player chat and shouts, global to the server.",
		2624	};
		2625
755	# rough implementation of a future "reply" method that works	2626	# rough implementation of a future "reply" method that works
756	# with dialog boxes.	2627	# with dialog boxes.
		2628	#TODO: the first argument must go, split into a $npc->reply_to ( method
757	sub cf::object::player::reply($$$;$) {	2629	sub cf::object::player::reply($$$;$) {
758	my ($self, $npc, $msg, $flags) = @_;	2630	my ($self, $npc, $msg, $flags) = @_;
759		2631
760	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2632	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
761		2633
762	if ($self->{record_replies}) {	2634	if ($self->{record_replies}) {
763	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2635	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2636
764	} else {	2637	} else {
		2638	my $pl = $self->contr;
		2639
		2640	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2641	my $dialog = $pl->{npc_dialog};
		2642	$dialog->{pl}->ext_msg ($dialog->{id}, update => msg => $dialog->{pl}->expand_cfpod ($msg));
		2643
		2644	} else {
765	$msg = $npc->name . " says: $msg" if $npc;	2645	$msg = $npc->name . " says: $msg" if $npc;
766	$self->message ($msg, $flags);	2646	$self->send_msg ($SAY_CHANNEL => $msg, $flags);
		2647	}
		2648	}
		2649	}
		2650
		2651	=item $object->send_msg ($channel, $msg, $color, [extra...])
		2652
		2653	=cut
		2654
		2655	sub cf::object::send_msg {
		2656	my $pl = shift->contr
		2657	or return;
		2658	$pl->send_msg (@_);
		2659	}
		2660
		2661	=item $player_object->may ("access")
		2662
		2663	Returns wether the given player is authorized to access resource "access"
		2664	(e.g. "command_wizcast").
		2665
		2666	=cut
		2667
		2668	sub cf::object::player::may {
		2669	my ($self, $access) = @_;
		2670
		2671	$self->flag (cf::FLAG_WIZ) ||
		2672	(ref $cf::CFG{"may_$access"}
		2673	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2674	: $cf::CFG{"may_$access"})
		2675	}
		2676
		2677	=item $player_object->enter_link
		2678
		2679	Freezes the player and moves him/her to a special map (C<{link}>).
		2680
		2681	The player should be reasonably safe there for short amounts of time (e.g.
		2682	for loading a map). You I<MUST> call C<leave_link> as soon as possible,
		2683	though, as the player cannot control the character while it is on the link
		2684	map.
		2685
		2686	Will never block.
		2687
		2688	=item $player_object->leave_link ($map, $x, $y)
		2689
		2690	Moves the player out of the special C<{link}> map onto the specified
		2691	map. If the map is not valid (or omitted), the player will be moved back
		2692	to the location he/she was before the call to C<enter_link>, or, if that
		2693	fails, to the emergency map position.
		2694
		2695	Might block.
		2696
		2697	=cut
		2698
		2699	sub link_map {
		2700	unless ($LINK_MAP) {
		2701	$LINK_MAP = cf::map::find "{link}"
		2702	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2703	$LINK_MAP->load;
		2704	}
		2705
		2706	$LINK_MAP
		2707	}
		2708
		2709	sub cf::object::player::enter_link {
		2710	my ($self) = @_;
		2711
		2712	$self->deactivate_recursive;
		2713
		2714	++$self->{_link_recursion};
		2715
		2716	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2717
		2718	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2719	if $self->map && $self->map->{path} ne "{link}";
		2720
		2721	$self->enter_map ($LINK_MAP || link_map, 3, 3);
		2722	}
		2723
		2724	sub cf::object::player::leave_link {
		2725	my ($self, $map, $x, $y) = @_;
		2726
		2727	return unless $self->contr->active;
		2728
		2729	my $link_pos = delete $self->{_link_pos};
		2730
		2731	unless ($map) {
		2732	# restore original map position
		2733	($map, $x, $y) = @{ $link_pos || [] };
		2734	$map = cf::map::find $map;
		2735
		2736	unless ($map) {
		2737	($map, $x, $y) = @$EMERGENCY_POSITION;
		2738	$map = cf::map::find $map
		2739	or die "FATAL: cannot load emergency map\n";
		2740	}
		2741	}
		2742
		2743	($x, $y) = (-1, -1)
		2744	unless (defined $x) && (defined $y);
		2745
		2746	# use -1 or undef as default coordinates, not 0, 0
		2747	($x, $y) = ($map->enter_x, $map->enter_y)
		2748	if $x <= 0 && $y <= 0;
		2749
		2750	$map->load;
		2751	$map->load_neighbours;
		2752
		2753	return unless $self->contr->active;
		2754
		2755	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2756	if ($self->enter_map ($map, $x, $y)) {
		2757	# entering was successful
		2758	delete $self->{_link_recursion};
		2759	# only activate afterwards, to support waiting in hooks
		2760	$self->activate_recursive;
		2761	}
		2762
		2763	}
		2764
		2765	=item $player_object->goto ($path, $x, $y[, $check->($map, $x, $y, $player)[, $done->($player)]])
		2766
		2767	Moves the player to the given map-path and coordinates by first freezing
		2768	her, loading and preparing them map, calling the provided $check callback
		2769	that has to return the map if sucecssful, and then unfreezes the player on
		2770	the new (success) or old (failed) map position. In either case, $done will
		2771	be called at the end of this process.
		2772
		2773	Note that $check will be called with a potentially non-loaded map, so if
		2774	it needs a loaded map it has to call C<< ->load >>.
		2775
		2776	=cut
		2777
		2778	our $GOTOGEN;
		2779
		2780	sub cf::object::player::goto {
		2781	my ($self, $path, $x, $y, $check, $done) = @_;
		2782
		2783	if ($self->{_link_recursion} >= $MAX_LINKS) {
		2784	error "FATAL: link recursion exceeded, ", $self->name, " goto $path $x $y, redirecting.";
		2785	$self->failmsg ("Something went wrong inside the server - please contact an administrator!");
		2786	($path, $x, $y) = @$EMERGENCY_POSITION;
		2787	}
		2788
		2789	# do generation counting so two concurrent goto's will be executed in-order
		2790	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2791
		2792	$self->enter_link;
		2793
		2794	(async {
		2795	$Coro::current->{desc} = "player::goto $path $x $y";
		2796
		2797	# *tag paths override both path and x|y
		2798	if ($path =~ /^\*(.*)$/) {
		2799	if (my @obs = grep $_->map, ext::map_tags::find $1) {
		2800	my $ob = $obs[rand @obs];
		2801
		2802	# see if we actually can go there
		2803	if (@obs = grep !$self->blocked ($_->map, $_->x, $_->y), $ob, $ob->tail) {
		2804	$ob = $obs[rand @obs];
		2805	} else {
		2806	$self->message ("Wow, it's pretty crowded in there.", cf::NDI_UNIQUE | cf::NDI_RED);
		2807	}
		2808	# else put us there anyways for now #d#
		2809
		2810	($path, $x, $y) = ($ob->map, $ob->x, $ob->y);
		2811	} else {
		2812	($path, $x, $y) = (undef, undef, undef);
		2813	}
		2814	}
		2815
		2816	my $map = eval {
		2817	my $map = defined $path ? cf::map::find $path : undef;
		2818
		2819	if ($map) {
		2820	$map = $map->customise_for ($self);
		2821	$map = $check->($map, $x, $y, $self) if $check && $map;
		2822	} else {
		2823	$self->message ("The exit to '$path' is closed.", cf::NDI_UNIQUE | cf::NDI_RED);
		2824	}
		2825
		2826	$map
		2827	};
		2828
		2829	if ($@) {
		2830	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2831	LOG llevError | logBacktrace, Carp::longmess $@;
		2832	}
		2833
		2834	if ($gen == $self->{_goto_generation}) {
		2835	delete $self->{_goto_generation};
		2836	$self->leave_link ($map, $x, $y);
		2837	}
		2838
		2839	$done->($self) if $done;
		2840	})->prio (1);
		2841	}
		2842
		2843	=item $player_object->enter_exit ($exit_object)
		2844
		2845	=cut
		2846
		2847	sub parse_random_map_params {
		2848	my ($spec) = @_;
		2849
		2850	my $rmp = { # defaults
		2851	xsize => (cf::rndm 15, 40),
		2852	ysize => (cf::rndm 15, 40),
		2853	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2854	#layout => string,
767	}	2855	};
768	}
769		2856
		2857	for (split /\n/, $spec) {
		2858	my ($k, $v) = split /\s+/, $_, 2;
		2859
		2860	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2861	}
		2862
		2863	$rmp
		2864	}
		2865
		2866	sub prepare_random_map {
		2867	my ($exit) = @_;
		2868
		2869	# all this does is basically replace the /! path by
		2870	# a new random map path (?random/...) with a seed
		2871	# that depends on the exit object
		2872
		2873	my $rmp = parse_random_map_params $exit->msg;
		2874
		2875	if ($exit->map) {
		2876	$rmp->{region} = $exit->region->name;
		2877	$rmp->{origin_map} = $exit->map->path;
		2878	$rmp->{origin_x} = $exit->x;
		2879	$rmp->{origin_y} = $exit->y;
		2880
		2881	$exit->map->touch;
		2882	}
		2883
		2884	$rmp->{random_seed} ||= $exit->random_seed;
		2885
		2886	my $data = JSON::XS->new->utf8->pretty->canonical->encode ($rmp);
		2887	my $md5 = Digest::MD5::md5_hex $data;
		2888	my $meta = "$RANDOMDIR/$md5.meta";
		2889
		2890	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2891	aio_write $fh, 0, (length $data), $data, 0;
		2892	undef $fh;
		2893	aio_rename "$meta~", $meta;
		2894
		2895	my $slaying = "?random/$md5";
		2896
		2897	if ($exit->valid) {
		2898	$exit->slaying ("?random/$md5");
		2899	$exit->msg (undef);
		2900	}
		2901	}
		2902	}
		2903
		2904	sub cf::object::player::enter_exit {
		2905	my ($self, $exit) = @_;
		2906
		2907	return unless $self->type == cf::PLAYER;
		2908
		2909	$self->enter_link;
		2910
		2911	(async {
		2912	$Coro::current->{desc} = "enter_exit";
		2913
		2914	unless (eval {
		2915	$self->deactivate_recursive; # just to be sure
		2916
		2917	# random map handling
		2918	{
		2919	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2920
		2921	prepare_random_map $exit
		2922	if $exit->slaying eq "/!";
		2923	}
		2924
		2925	my $map = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2926	my $x = $exit->stats->hp;
		2927	my $y = $exit->stats->sp;
		2928
		2929	$self->goto ($map, $x, $y);
		2930
		2931	# if exit is damned, update players death & WoR home-position
		2932	$self->contr->savebed ($map, $x, $y)
		2933	if $exit->flag (cf::FLAG_DAMNED);
		2934
		2935	1
		2936	}) {
		2937	$self->message ("Something went wrong deep within the deliantra server. "
		2938	. "I'll try to bring you back to the map you were before. "
		2939	. "Please report this to the dungeon master!",
		2940	cf::NDI_UNIQUE | cf::NDI_RED);
		2941
		2942	error "ERROR in enter_exit: $@";
		2943	$self->leave_link;
		2944	}
		2945	})->prio (1);
		2946	}
		2947
		2948	=head3 cf::client
		2949
		2950	=over 4
		2951
		2952	=item $client->send_drawinfo ($text, $flags)
		2953
		2954	Sends a drawinfo packet to the client. Circumvents output buffering so
		2955	should not be used under normal circumstances.
		2956
		2957	=cut
		2958
		2959	sub cf::client::send_drawinfo {
		2960	my ($self, $text, $flags) = @_;
		2961
		2962	utf8::encode $text;
		2963	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2964	}
		2965
		2966	=item $client->send_big_packet ($pkt)
		2967
		2968	Like C<send_packet>, but tries to compress large packets, and fragments
		2969	them as required.
		2970
		2971	=cut
		2972
		2973	our $MAXFRAGSIZE = cf::MAXSOCKBUF - 64;
		2974
		2975	sub cf::client::send_big_packet {
		2976	my ($self, $pkt) = @_;
		2977
		2978	# try lzf for large packets
		2979	$pkt = "lzf " . Compress::LZF::compress $pkt
		2980	if 1024 <= length $pkt and $self->{can_lzf};
		2981
		2982	# split very large packets
		2983	if ($MAXFRAGSIZE < length $pkt and $self->{can_lzf}) {
		2984	$self->send_packet ("frag $_") for unpack "(a$MAXFRAGSIZE)*", $pkt;
		2985	$pkt = "frag";
		2986	}
		2987
		2988	$self->send_packet ($pkt);
		2989	}
		2990
		2991	=item $client->send_msg ($channel, $msg, $color, [extra...])
		2992
		2993	Send a drawinfo or msg packet to the client, formatting the msg for the
		2994	client if neccessary. C<$type> should be a string identifying the type of
		2995	the message, with C<log> being the default. If C<$color> is negative, suppress
		2996	the message unless the client supports the msg packet.
		2997
		2998	=cut
		2999
		3000	# non-persistent channels (usually the info channel)
		3001	our %CHANNEL = (
		3002	"c/motd" => {
		3003	id => "infobox",
		3004	title => "MOTD",
		3005	reply => undef,
		3006	tooltip => "The message of the day",
		3007	},
		3008	"c/identify" => {
		3009	id => "infobox",
		3010	title => "Identify",
		3011	reply => undef,
		3012	tooltip => "Items recently identified",
		3013	},
		3014	"c/examine" => {
		3015	id => "infobox",
		3016	title => "Examine",
		3017	reply => undef,
		3018	tooltip => "Signs and other items you examined",
		3019	},
		3020	"c/shopinfo" => {
		3021	id => "infobox",
		3022	title => "Shop Info",
		3023	reply => undef,
		3024	tooltip => "What your bargaining skill tells you about the shop",
		3025	},
		3026	"c/book" => {
		3027	id => "infobox",
		3028	title => "Book",
		3029	reply => undef,
		3030	tooltip => "The contents of a note or book",
		3031	},
		3032	"c/lookat" => {
		3033	id => "infobox",
		3034	title => "Look",
		3035	reply => undef,
		3036	tooltip => "What you saw there",
		3037	},
		3038	"c/who" => {
		3039	id => "infobox",
		3040	title => "Players",
		3041	reply => undef,
		3042	tooltip => "Shows players who are currently online",
		3043	},
		3044	"c/body" => {
		3045	id => "infobox",
		3046	title => "Body Parts",
		3047	reply => undef,
		3048	tooltip => "Shows which body parts you posess and are available",
		3049	},
		3050	"c/statistics" => {
		3051	id => "infobox",
		3052	title => "Statistics",
		3053	reply => undef,
		3054	tooltip => "Shows your primary statistics",
		3055	},
		3056	"c/skills" => {
		3057	id => "infobox",
		3058	title => "Skills",
		3059	reply => undef,
		3060	tooltip => "Shows your experience per skill and item power",
		3061	},
		3062	"c/shopitems" => {
		3063	id => "infobox",
		3064	title => "Shop Items",
		3065	reply => undef,
		3066	tooltip => "Shows the items currently for sale in this shop",
		3067	},
		3068	"c/resistances" => {
		3069	id => "infobox",
		3070	title => "Resistances",
		3071	reply => undef,
		3072	tooltip => "Shows your resistances",
		3073	},
		3074	"c/pets" => {
		3075	id => "infobox",
		3076	title => "Pets",
		3077	reply => undef,
		3078	tooltip => "Shows information abotu your pets/a specific pet",
		3079	},
		3080	"c/perceiveself" => {
		3081	id => "infobox",
		3082	title => "Perceive Self",
		3083	reply => undef,
		3084	tooltip => "You gained detailed knowledge about yourself",
		3085	},
		3086	"c/uptime" => {
		3087	id => "infobox",
		3088	title => "Uptime",
		3089	reply => undef,
		3090	tooltip => "How long the server has been running since last restart",
		3091	},
		3092	"c/mapinfo" => {
		3093	id => "infobox",
		3094	title => "Map Info",
		3095	reply => undef,
		3096	tooltip => "Information related to the maps",
		3097	},
		3098	"c/party" => {
		3099	id => "party",
		3100	title => "Party",
		3101	reply => "gsay ",
		3102	tooltip => "Messages and chat related to your party",
		3103	},
		3104	"c/death" => {
		3105	id => "death",
		3106	title => "Death",
		3107	reply => undef,
		3108	tooltip => "Reason for and more info about your most recent death",
		3109	},
		3110	"c/say" => $SAY_CHANNEL,
		3111	"c/chat" => $CHAT_CHANNEL,
		3112	);
		3113
		3114	sub cf::client::send_msg {
		3115	my ($self, $channel, $msg, $color, @extra) = @_;
		3116
		3117	$msg = $self->pl->expand_cfpod ($msg)
		3118	unless $color & cf::NDI_VERBATIM;
		3119
		3120	$color &= cf::NDI_CLIENT_MASK; # just in case...
		3121
		3122	# check predefined channels, for the benefit of C
		3123	if ($CHANNEL{$channel}) {
		3124	$channel = $CHANNEL{$channel};
		3125
		3126	$self->ext_msg (channel_info => $channel);
		3127	$channel = $channel->{id};
		3128
		3129	} elsif (ref $channel) {
		3130	# send meta info to client, if not yet sent
		3131	unless (exists $self->{channel}{$channel->{id}}) {
		3132	$self->{channel}{$channel->{id}} = $channel;
		3133	$self->ext_msg (channel_info => $channel);
		3134	}
		3135
		3136	$channel = $channel->{id};
		3137	}
		3138
		3139	return unless @extra || length $msg;
		3140
		3141	# default colour, mask it out
		3142	$color &= ~(cf::NDI_COLOR_MASK | cf::NDI_DEF)
		3143	if $color & cf::NDI_DEF;
		3144
		3145	my $pkt = "msg "
		3146	. $self->{json_coder}->encode (
		3147	[$color & cf::NDI_CLIENT_MASK, $channel, $msg, @extra]
		3148	);
		3149
		3150	$self->send_big_packet ($pkt);
		3151	}
		3152
		3153	=item $client->ext_msg ($type, @msg)
		3154
		3155	Sends an ext event to the client.
		3156
		3157	=cut
		3158
		3159	sub cf::client::ext_msg($$@) {
		3160	my ($self, $type, @msg) = @_;
		3161
		3162	if ($self->extcmd == 2) {
		3163	$self->send_big_packet ("ext " . $self->{json_coder}->encode ([$type, @msg]));
		3164	} elsif ($self->extcmd == 1) { # TODO: remove
		3165	push @msg, msgtype => "event_$type";
		3166	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3167	}
		3168	}
		3169
770	=item $player->ext_reply ($msgid, $msgtype, %msg)	3170	=item $client->ext_reply ($msgid, @msg)
771		3171
772	Sends an ext reply to the player.	3172	Sends an ext reply to the client.
773		3173
774	=cut	3174	=cut
775		3175
776	sub cf::player::ext_reply($$$%) {	3176	sub cf::client::ext_reply($$@) {
777	my ($self, $id, %msg) = @_;	3177	my ($self, $id, @msg) = @_;
778		3178
779	$msg{msgid} = $id;	3179	if ($self->extcmd == 2) {
780		3180	$self->send_big_packet ("ext " . $self->{json_coder}->encode (["reply-$id", @msg]));
781	$self->send ("ext " . to_json \%msg);	3181	} elsif ($self->extcmd == 1) {
		3182	#TODO: version 1, remove
		3183	unshift @msg, msgtype => "reply", msgid => $id;
		3184	$self->send_big_packet ("ext " . $self->{json_coder}->encode ({@msg}));
		3185	}
782	}	3186	}
783		3187
784	#############################################################################	3188	=item $success = $client->query ($flags, "text", \&cb)
785	# map scripting support	3189
		3190	Queues a query to the client, calling the given callback with
		3191	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		3192	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		3193
		3194	Queries can fail, so check the return code. Or don't, as queries will
		3195	become reliable at some point in the future.
		3196
		3197	=cut
		3198
		3199	sub cf::client::query {
		3200	my ($self, $flags, $text, $cb) = @_;
		3201
		3202	return unless $self->state == ST_PLAYING
		3203	|| $self->state == ST_SETUP
		3204	|| $self->state == ST_CUSTOM;
		3205
		3206	$self->state (ST_CUSTOM);
		3207
		3208	utf8::encode $text;
		3209	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		3210
		3211	$self->send_packet ($self->{query_queue}[0][0])
		3212	if @{ $self->{query_queue} } == 1;
		3213
		3214	1
		3215	}
		3216
		3217	cf::client->attach (
		3218	on_connect => sub {
		3219	my ($ns) = @_;
		3220
		3221	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		3222	},
		3223	on_reply => sub {
		3224	my ($ns, $msg) = @_;
		3225
		3226	# this weird shuffling is so that direct followup queries
		3227	# get handled first
		3228	my $queue = delete $ns->{query_queue}
		3229	or return; # be conservative, not sure how that can happen, but we saw a crash here
		3230
		3231	(shift @$queue)->[1]->($msg);
		3232	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		3233
		3234	push @{ $ns->{query_queue} }, @$queue;
		3235
		3236	if (@{ $ns->{query_queue} } == @$queue) {
		3237	if (@$queue) {
		3238	$ns->send_packet ($ns->{query_queue}[0][0]);
		3239	} else {
		3240	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		3241	}
		3242	}
		3243	},
		3244	on_exticmd => sub {
		3245	my ($ns, $buf) = @_;
		3246
		3247	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		3248
		3249	if (ref $msg) {
		3250	my ($type, $reply, @payload) =
		3251	"ARRAY" eq ref $msg
		3252	? @$msg
		3253	: ($msg->{msgtype}, $msg->{msgid}, %$msg); # TODO: version 1, remove
		3254
		3255	my @reply;
		3256
		3257	if (my $cb = $EXTICMD{$type}) {
		3258	@reply = $cb->($ns, @payload);
		3259	}
		3260
		3261	$ns->ext_reply ($reply, @reply)
		3262	if $reply;
		3263
		3264	} else {
		3265	error "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		3266	}
		3267
		3268	cf::override;
		3269	},
		3270	);
		3271
		3272	=item $client->async (\&cb)
		3273
		3274	Create a new coroutine, running the specified callback. The coroutine will
		3275	be automatically cancelled when the client gets destroyed (e.g. on logout,
		3276	or loss of connection).
		3277
		3278	=cut
		3279
		3280	sub cf::client::async {
		3281	my ($self, $cb) = @_;
		3282
		3283	my $coro = &Coro::async ($cb);
		3284
		3285	$coro->on_destroy (sub {
		3286	delete $self->{_coro}{$coro+0};
		3287	});
		3288
		3289	$self->{_coro}{$coro+0} = $coro;
		3290
		3291	$coro
		3292	}
		3293
		3294	cf::client->attach (
		3295	on_client_destroy => sub {
		3296	my ($ns) = @_;
		3297
		3298	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		3299	},
		3300	);
		3301
		3302	=back
		3303
		3304
		3305	=head2 SAFE SCRIPTING
		3306
		3307	Functions that provide a safe environment to compile and execute
		3308	snippets of perl code without them endangering the safety of the server
		3309	itself. Looping constructs, I/O operators and other built-in functionality
		3310	is not available in the safe scripting environment, and the number of
		3311	functions and methods that can be called is greatly reduced.
		3312
		3313	=cut
786		3314
787	our $safe = new Safe "safe";	3315	our $safe = new Safe "safe";
788	our $safe_hole = new Safe::Hole;	3316	our $safe_hole = new Safe::Hole;
789		3317
790	$SIG{FPE} = 'IGNORE';	3318	$SIG{FPE} = 'IGNORE';
791		3319
792	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	3320	$safe->permit_only (Opcode::opset qw(
		3321	:base_core :base_mem :base_orig :base_math :base_loop
		3322	grepstart grepwhile mapstart mapwhile
		3323	sort time
		3324	));
793		3325
794	# here we export the classes and methods available to script code	3326	# here we export the classes and methods available to script code
795		3327
		3328	=pod
		3329
		3330	The following functions and methods are available within a safe environment:
		3331
		3332	cf::object
		3333	contr pay_amount pay_player map x y force_find force_add destroy
		3334	insert remove name archname title slaying race decrease split
		3335	value
		3336
		3337	cf::object::player
		3338	player
		3339
		3340	cf::player
		3341	peaceful
		3342
		3343	cf::map
		3344	trigger
		3345
		3346	=cut
		3347
796	for (	3348	for (
797	["cf::object" => qw(contr pay_amount pay_player)],	3349	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		3350	insert remove inv nrof name archname title slaying race
		3351	decrease split destroy change_exp value msg lore send_msg)],
798	["cf::object::player" => qw(player)],	3352	["cf::object::player" => qw(player)],
799	["cf::player" => qw(peaceful)],	3353	["cf::player" => qw(peaceful send_msg)],
		3354	["cf::map" => qw(trigger)],
800	) {	3355	) {
801	no strict 'refs';
802	my ($pkg, @funs) = @$_;	3356	my ($pkg, @funs) = @$_;
803	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	3357	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
804	for @funs;	3358	for @funs;
805	}	3359	}
806		3360
		3361	=over 4
		3362
		3363	=item @retval = safe_eval $code, [var => value, ...]
		3364
		3365	Compiled and executes the given perl code snippet. additional var/value
		3366	pairs result in temporary local (my) scalar variables of the given name
		3367	that are available in the code snippet. Example:
		3368
		3369	my $five = safe_eval '$first + $second', first => 1, second => 4;
		3370
		3371	=cut
		3372
807	sub safe_eval($;@) {	3373	sub safe_eval($;@) {
808	my ($code, %vars) = @_;	3374	my ($code, %vars) = @_;
809		3375
810	my $qcode = $code;	3376	my $qcode = $code;
811	$qcode =~ s/"/‟/g; # not allowed in #line filenames	3377	$qcode =~ s/"/‟/g; # not allowed in #line filenames
812	$qcode =~ s/\n/\\n/g;	3378	$qcode =~ s/\n/\\n/g;
813		3379
		3380	%vars = (_dummy => 0) unless %vars;
		3381
		3382	my @res;
814	local $_;	3383	local $_;
815	local @safe::cf::_safe_eval_args = values %vars;
816		3384
817	my $eval =	3385	my $eval =
818	"do {\n"	3386	"do {\n"
819	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	3387	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
820	. "#line 0 \"{$qcode}\"\n"	3388	. "#line 0 \"{$qcode}\"\n"
821	. $code	3389	. $code
822	. "\n}"	3390	. "\n}"
823	;	3391	;
824		3392
		3393	if ($CFG{safe_eval}) {
825	sub_generation_inc;	3394	sub_generation_inc;
		3395	local @safe::cf::_safe_eval_args = values %vars;
826	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);	3396	@res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
827	sub_generation_inc;	3397	sub_generation_inc;
		3398	} else {
		3399	local @cf::_safe_eval_args = values %vars;
		3400	@res = wantarray ? eval eval : scalar eval $eval;
		3401	}
828		3402
829	if ($@) {	3403	if ($@) {
830	warn "$@";	3404	warn "$@",
831	warn "while executing safe code '$code'\n";	3405	"while executing safe code '$code'\n",
832	warn "with arguments " . (join " ", %vars) . "\n";	3406	"with arguments " . (join " ", %vars) . "\n";
833	}	3407	}
834		3408
835	wantarray ? @res : $res[0]	3409	wantarray ? @res : $res[0]
836	}	3410	}
		3411
		3412	=item cf::register_script_function $function => $cb
		3413
		3414	Register a function that can be called from within map/npc scripts. The
		3415	function should be reasonably secure and should be put into a package name
		3416	like the extension.
		3417
		3418	Example: register a function that gets called whenever a map script calls
		3419	C<rent::overview>, as used by the C<rent> extension.
		3420
		3421	cf::register_script_function "rent::overview" => sub {
		3422	...
		3423	};
		3424
		3425	=cut
837		3426
838	sub register_script_function {	3427	sub register_script_function {
839	my ($fun, $cb) = @_;	3428	my ($fun, $cb) = @_;
840		3429
841	no strict 'refs';	3430	$fun = "safe::$fun" if $CFG{safe_eval};
842	*{"safe::$fun"} = $safe_hole->wrap ($cb);	3431	*$fun = $safe_hole->wrap ($cb);
843	}	3432	}
		3433
		3434	=back
		3435
		3436	=cut
844		3437
845	#############################################################################	3438	#############################################################################
846	# the server's main()	3439	# the server's init and main functions
		3440
		3441	sub load_facedata($) {
		3442	my ($path) = @_;
		3443
		3444	# HACK to clear player env face cache, we need some signal framework
		3445	# for this (global event?)
		3446	%ext::player_env::MUSIC_FACE_CACHE = ();
		3447
		3448	my $enc = JSON::XS->new->utf8->canonical->relaxed;
		3449
		3450	trace "loading facedata from $path\n";
		3451
		3452	my $facedata = decode_storable load_file $path;
		3453
		3454	$facedata->{version} == 2
		3455	or cf::cleanup "$path: version mismatch, cannot proceed.";
		3456
		3457	# patch in the exptable
		3458	my $exp_table = $enc->encode ([map cf::level_to_min_exp $_, 1 .. cf::settings->max_level]);
		3459	$facedata->{resource}{"res/exp_table"} = {
		3460	type => FT_RSRC,
		3461	data => $exp_table,
		3462	hash => (Digest::MD5::md5 $exp_table),
		3463	};
		3464	cf::cede_to_tick;
		3465
		3466	{
		3467	my $faces = $facedata->{faceinfo};
		3468
		3469	while (my ($face, $info) = each %$faces) {
		3470	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		3471
		3472	cf::face::set_visibility $idx, $info->{visibility};
		3473	cf::face::set_magicmap $idx, $info->{magicmap};
		3474	cf::face::set_data $idx, 0, $info->{data32}, $info->{hash32};
		3475	cf::face::set_data $idx, 1, $info->{data64}, $info->{hash64};
		3476	cf::face::set_data $idx, 2, $info->{glyph} , $info->{glyph} ;
		3477
		3478	cf::cede_to_tick;
		3479	}
		3480
		3481	while (my ($face, $info) = each %$faces) {
		3482	next unless $info->{smooth};
		3483
		3484	my $idx = cf::face::find $face
		3485	or next;
		3486
		3487	if (my $smooth = cf::face::find $info->{smooth}) {
		3488	cf::face::set_smooth $idx, $smooth;
		3489	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
		3490	} else {
		3491	error "smooth face '$info->{smooth}' not found for face '$face'";
		3492	}
		3493
		3494	cf::cede_to_tick;
		3495	}
		3496	}
		3497
		3498	{
		3499	my $anims = $facedata->{animinfo};
		3500
		3501	while (my ($anim, $info) = each %$anims) {
		3502	cf::anim::set $anim, $info->{frames}, $info->{facings};
		3503	cf::cede_to_tick;
		3504	}
		3505
		3506	cf::anim::invalidate_all; # d'oh
		3507	}
		3508
		3509	{
		3510	my $res = $facedata->{resource};
		3511
		3512	while (my ($name, $info) = each %$res) {
		3513	if (defined $info->{type}) {
		3514	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		3515
		3516	cf::face::set_data $idx, 0, $info->{data}, $info->{hash};
		3517	cf::face::set_type $idx, $info->{type};
		3518	} else {
		3519	$RESOURCE{$name} = $info; # unused
		3520	}
		3521
		3522	cf::cede_to_tick;
		3523	}
		3524	}
		3525
		3526	cf::global->invoke (EVENT_GLOBAL_RESOURCE_UPDATE);
		3527
		3528	1
		3529	}
		3530
		3531	register_exticmd fx_want => sub {
		3532	my ($ns, $want) = @_;
		3533
		3534	while (my ($k, $v) = each %$want) {
		3535	$ns->fx_want ($k, $v);
		3536	}
		3537	};
		3538
		3539	sub load_resource_file($) {
		3540	my $guard = lock_acquire "load_resource_file";
		3541
		3542	my $status = load_resource_file_ $_[0];
		3543	get_slot 0.1, 100;
		3544	cf::arch::commit_load;
		3545
		3546	$status
		3547	}
		3548
		3549	sub reload_regions {
		3550	# HACK to clear player env face cache, we need some signal framework
		3551	# for this (global event?)
		3552	%ext::player_env::MUSIC_FACE_CACHE = ();
		3553
		3554	load_resource_file "$MAPDIR/regions"
		3555	or die "unable to load regions file\n";
		3556
		3557	for (cf::region::list) {
		3558	$_->{match} = qr/$_->{match}/
		3559	if exists $_->{match};
		3560	}
		3561	}
		3562
		3563	sub reload_facedata {
		3564	load_facedata "$DATADIR/facedata"
		3565	or die "unable to load facedata\n";
		3566	}
		3567
		3568	sub reload_archetypes {
		3569	load_resource_file "$DATADIR/archetypes"
		3570	or die "unable to load archetypes\n";
		3571	}
		3572
		3573	sub reload_treasures {
		3574	load_resource_file "$DATADIR/treasures"
		3575	or die "unable to load treasurelists\n";
		3576	}
		3577
		3578	sub reload_sound {
		3579	trace "loading sound config from $DATADIR/sound\n";
		3580
		3581	my $soundconf = JSON::XS->new->utf8->relaxed->decode (load_file "$DATADIR/sound");
		3582
		3583	for (0 .. SOUND_CAST_SPELL_0 - 1) {
		3584	my $sound = $soundconf->{compat}[$_]
		3585	or next;
		3586
		3587	my $face = cf::face::find "sound/$sound->[1]";
		3588	cf::sound::set $sound->[0] => $face;
		3589	cf::sound::old_sound_index $_, $face; # gcfclient-compat
		3590	}
		3591
		3592	while (my ($k, $v) = each %{$soundconf->{event}}) {
		3593	my $face = cf::face::find "sound/$v";
		3594	cf::sound::set $k => $face;
		3595	}
		3596	}
		3597
		3598	sub reload_resources {
		3599	trace "reloading resource files...\n";
		3600
		3601	reload_exp_table;
		3602	reload_materials;
		3603	reload_facedata;
		3604	reload_sound;
		3605	reload_archetypes;
		3606	reload_regions;
		3607	reload_treasures;
		3608
		3609	trace "finished reloading resource files\n";
		3610	}
		3611
		3612	sub reload_config {
		3613	trace "reloading config file...\n";
		3614
		3615	my $config = load_file "$CONFDIR/config";
		3616	utf8::decode $config;
		3617	*CFG = decode_yaml $config;
		3618
		3619	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_104_115", 49, 38];
		3620
		3621	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		3622	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		3623
		3624	if (exists $CFG{mlockall}) {
		3625	eval {
		3626	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		3627	and die "WARNING: m(un)lockall failed: $!\n";
		3628	};
		3629	warn $@ if $@;
		3630	}
		3631	}
		3632
		3633	sub pidfile() {
		3634	sysopen my $fh, $PIDFILE, O_RDWR | O_CREAT
		3635	or die "$PIDFILE: $!";
		3636	flock $fh, &Fcntl::LOCK_EX
		3637	or die "$PIDFILE: flock: $!";
		3638	$fh
		3639	}
		3640
		3641	# make sure only one server instance is running at any one time
		3642	sub atomic {
		3643	my $fh = pidfile;
		3644
		3645	my $pid = <$fh>;
		3646	kill 9, $pid if $pid > 0;
		3647
		3648	seek $fh, 0, 0;
		3649	print $fh $$;
		3650	}
		3651
		3652	sub main_loop {
		3653	trace "EV::loop starting\n";
		3654	if (1) {
		3655	EV::loop;
		3656	}
		3657	trace "EV::loop returned\n";
		3658	goto &main_loop unless $REALLY_UNLOOP;
		3659	}
847		3660
848	sub main {	3661	sub main {
849	Event::loop;	3662	cf::init_globals; # initialise logging
		3663
		3664	LOG llevInfo, "Welcome to Deliantra, v" . VERSION;
		3665	LOG llevInfo, "Copyright (C) 2005-2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team.";
		3666	LOG llevInfo, "Copyright (C) 1994 Mark Wedel.";
		3667	LOG llevInfo, "Copyright (C) 1992 Frank Tore Johansen.";
		3668
		3669	$Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority
		3670
		3671	# we must not ever block the main coroutine
		3672	local $Coro::idle = sub {
		3673	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		3674	(async {
		3675	$Coro::current->{desc} = "IDLE BUG HANDLER";
		3676	EV::loop EV::LOOP_ONESHOT;
		3677	})->prio (Coro::PRIO_MAX);
		3678	};
		3679
		3680	evthread_start IO::AIO::poll_fileno;
		3681
		3682	cf::sync_job {
		3683	cf::incloader::init ();
		3684
		3685	cf::init_anim;
		3686	cf::init_attackmess;
		3687	cf::init_dynamic;
		3688
		3689	cf::load_settings;
		3690
		3691	reload_resources;
		3692	reload_config;
		3693	db_init;
		3694
		3695	cf::init_uuid;
		3696	cf::init_signals;
		3697	cf::init_skills;
		3698
		3699	cf::init_beforeplay;
		3700
		3701	atomic;
		3702
		3703	load_extensions;
		3704
		3705	utime time, time, $RUNTIMEFILE;
		3706
		3707	# no (long-running) fork's whatsoever before this point(!)
		3708	use POSIX ();
		3709	POSIX::close delete $ENV{LOCKUTIL_LOCK_FD} if exists $ENV{LOCKUTIL_LOCK_FD};
		3710
		3711	cf::_post_init 0;
		3712	};
		3713
		3714	cf::object::thawer::errors_are_fatal 0;
		3715	info "parse errors in files are no longer fatal from this point on.\n";
		3716
		3717	my $free_main; $free_main = EV::idle sub {
		3718	undef $free_main;
		3719	undef &main; # free gobs of memory :)
		3720	};
		3721
		3722	goto &main_loop;
850	}	3723	}
851		3724
852	#############################################################################	3725	#############################################################################
853	# initialisation	3726	# initialisation and cleanup
854		3727
855	register "<global>", __PACKAGE__;	3728	# install some emergency cleanup handlers
		3729	BEGIN {
		3730	our %SIGWATCHER = ();
		3731	for my $signal (qw(INT HUP TERM)) {
		3732	$SIGWATCHER{$signal} = AE::signal $signal, sub {
		3733	cf::cleanup "SIG$signal";
		3734	};
		3735	}
		3736	}
856		3737
857	unshift @INC, $LIBDIR;	3738	sub write_runtime_sync {
		3739	my $t0 = AE::time;
858		3740
859	load_extensions;	3741	# first touch the runtime file to show we are still running:
		3742	# the fsync below can take a very very long time.
860		3743
861	$TICK_WATCHER = Event->timer (	3744	IO::AIO::aio_utime $RUNTIMEFILE, undef, undef;
862	prio => 1,	3745
863	at => $NEXT_TICK || 1,	3746	my $guard = cf::lock_acquire "write_runtime";
864	cb => sub {	3747
		3748	my $fh = aio_open "$RUNTIMEFILE~", O_WRONLY | O_CREAT | O_TRUNC, 0644
		3749	or return;
		3750
		3751	my $value = $cf::RUNTIME + 90 + 10;
		3752	# 10 is the runtime save interval, for a monotonic clock
		3753	# 60 allows for the watchdog to kill the server.
		3754
		3755	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3756	and return;
		3757
		3758	# always fsync - this file is important
		3759	aio_fsync $fh
		3760	and return;
		3761
		3762	# touch it again to show we are up-to-date
		3763	aio_utime $fh, undef, undef;
		3764
		3765	close $fh
		3766	or return;
		3767
		3768	aio_rename "$RUNTIMEFILE~", $RUNTIMEFILE
		3769	and return;
		3770
		3771	trace sprintf "runtime file written (%gs).\n", AE::time - $t0;
		3772
		3773	1
		3774	}
		3775
		3776	our $uuid_lock;
		3777	our $uuid_skip;
		3778
		3779	sub write_uuid_sync($) {
		3780	$uuid_skip ||= $_[0];
		3781
		3782	return if $uuid_lock;
		3783	local $uuid_lock = 1;
		3784
		3785	my $uuid = "$LOCALDIR/uuid";
		3786
		3787	my $fh = aio_open "$uuid~", O_WRONLY | O_CREAT, 0644
		3788	or return;
		3789
		3790	my $value = uuid_seq uuid_cur;
		3791
		3792	unless ($value) {
		3793	info "cowardly refusing to write zero uuid value!\n";
		3794	return;
		3795	}
		3796
		3797	my $value = uuid_str $value + $uuid_skip;
		3798	$uuid_skip = 0;
		3799
		3800	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		3801	and return;
		3802
		3803	# always fsync - this file is important
		3804	aio_fsync $fh
		3805	and return;
		3806
		3807	close $fh
		3808	or return;
		3809
		3810	aio_rename "$uuid~", $uuid
		3811	and return;
		3812
		3813	trace "uuid file written ($value).\n";
		3814
		3815	1
		3816
		3817	}
		3818
		3819	sub write_uuid($$) {
		3820	my ($skip, $sync) = @_;
		3821
		3822	$sync ? write_uuid_sync $skip
		3823	: async { write_uuid_sync $skip };
		3824	}
		3825
		3826	sub emergency_save() {
		3827	my $freeze_guard = cf::freeze_mainloop;
		3828
		3829	info "emergency_perl_save: enter\n";
		3830
		3831	# this is a trade-off: we want to be very quick here, so
		3832	# save all maps without fsync, and later call a global sync
		3833	# (which in turn might be very very slow)
		3834	local $USE_FSYNC = 0;
		3835
		3836	cf::sync_job {
		3837	cf::write_runtime_sync; # external watchdog should not bark
		3838
		3839	# use a peculiar iteration method to avoid tripping on perl
		3840	# refcount bugs in for. also avoids problems with players
		3841	# and maps saved/destroyed asynchronously.
		3842	info "emergency_perl_save: begin player save\n";
		3843	for my $login (keys %cf::PLAYER) {
		3844	my $pl = $cf::PLAYER{$login} or next;
		3845	$pl->valid or next;
		3846	delete $pl->{unclean_save}; # not strictly necessary, but cannot hurt
		3847	$pl->save;
		3848	}
		3849	info "emergency_perl_save: end player save\n";
		3850
		3851	cf::write_runtime_sync; # external watchdog should not bark
		3852
		3853	info "emergency_perl_save: begin map save\n";
		3854	for my $path (keys %cf::MAP) {
		3855	my $map = $cf::MAP{$path} or next;
		3856	$map->valid or next;
		3857	$map->save;
		3858	}
		3859	info "emergency_perl_save: end map save\n";
		3860
		3861	cf::write_runtime_sync; # external watchdog should not bark
		3862
		3863	info "emergency_perl_save: begin database checkpoint\n";
		3864	BDB::db_env_txn_checkpoint $DB_ENV;
		3865	info "emergency_perl_save: end database checkpoint\n";
		3866
		3867	info "emergency_perl_save: begin write uuid\n";
		3868	write_uuid_sync 1;
		3869	info "emergency_perl_save: end write uuid\n";
		3870
		3871	cf::write_runtime_sync; # external watchdog should not bark
		3872
		3873	trace "emergency_perl_save: syncing database to disk";
		3874	BDB::db_env_txn_checkpoint $DB_ENV;
		3875
		3876	info "emergency_perl_save: starting sync\n";
		3877	IO::AIO::aio_sync sub {
		3878	info "emergency_perl_save: finished sync\n";
		3879	};
		3880
		3881	cf::write_runtime_sync; # external watchdog should not bark
		3882
		3883	trace "emergency_perl_save: flushing outstanding aio requests";
		3884	while (IO::AIO::nreqs || BDB::nreqs) {
		3885	Coro::EV::timer_once 0.01; # let the sync_job do it's thing
		3886	}
		3887
		3888	cf::write_runtime_sync; # external watchdog should not bark
		3889	};
		3890
		3891	info "emergency_perl_save: leave\n";
		3892	}
		3893
		3894	sub post_cleanup {
		3895	my ($make_core) = @_;
		3896
		3897	IO::AIO::flush;
		3898
		3899	error Carp::longmess "post_cleanup backtrace"
		3900	if $make_core;
		3901
		3902	my $fh = pidfile;
		3903	unlink $PIDFILE if <$fh> == $$;
		3904	}
		3905
		3906	# a safer delete_package, copied from Symbol
		3907	sub clear_package($) {
		3908	my $pkg = shift;
		3909
		3910	# expand to full symbol table name if needed
		3911	unless ($pkg =~ /^main::.*::$/) {
		3912	$pkg = "main$pkg" if $pkg =~ /^::/;
		3913	$pkg = "main::$pkg" unless $pkg =~ /^main::/;
		3914	$pkg .= '::' unless $pkg =~ /::$/;
		3915	}
		3916
		3917	my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
		3918	my $stem_symtab = *{$stem}{HASH};
		3919
		3920	defined $stem_symtab and exists $stem_symtab->{$leaf}
		3921	or return;
		3922
		3923	# clear all symbols
		3924	my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
		3925	for my $name (keys %$leaf_symtab) {
		3926	_gv_clear *{"$pkg$name"};
		3927	# use PApp::Util; PApp::Util::sv_dump *{"$pkg$name"};
		3928	}
		3929	}
		3930
		3931	sub do_reload_perl() {
		3932	# can/must only be called in main
		3933	unless (in_main) {
		3934	error "can only reload from main coroutine";
		3935	return;
		3936	}
		3937
		3938	return if $RELOAD++;
		3939
		3940	my $t1 = AE::time;
		3941
		3942	while ($RELOAD) {
		3943	cf::get_slot 0.1, -1, "reload_perl";
		3944	info "perl_reload: reloading...";
		3945
		3946	trace "perl_reload: entering sync_job";
		3947
		3948	cf::sync_job {
		3949	#cf::emergency_save;
		3950
		3951	trace "perl_reload: cancelling all extension coros";
		3952	$_->cancel for values %EXT_CORO;
		3953	%EXT_CORO = ();
		3954
		3955	trace "perl_reload: removing commands";
		3956	%COMMAND = ();
		3957
		3958	trace "perl_reload: removing ext/exti commands";
		3959	%EXTCMD = ();
		3960	%EXTICMD = ();
		3961
		3962	trace "perl_reload: unloading/nuking all extensions";
		3963	for my $pkg (@EXTS) {
		3964	trace "... unloading $pkg";
		3965
		3966	if (my $cb = $pkg->can ("unload")) {
		3967	eval {
		3968	$cb->($pkg);
		3969	1
		3970	} or error "$pkg unloaded, but with errors: $@";
		3971	}
		3972
		3973	trace "... clearing $pkg";
		3974	clear_package $pkg;
		3975	}
		3976
		3977	trace "perl_reload: unloading all perl modules loaded from $LIBDIR";
		3978	while (my ($k, $v) = each %INC) {
		3979	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		3980
		3981	trace "... unloading $k";
		3982	delete $INC{$k};
		3983
		3984	$k =~ s/\.pm$//;
		3985	$k =~ s/\//::/g;
		3986
		3987	if (my $cb = $k->can ("unload_module")) {
		3988	$cb->();
		3989	}
		3990
		3991	clear_package $k;
		3992	}
		3993
		3994	trace "perl_reload: getting rid of safe::, as good as possible";
		3995	clear_package "safe::$_"
		3996	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		3997
		3998	trace "perl_reload: unloading cf.pm \"a bit\"";
		3999	delete $INC{"cf.pm"};
		4000	delete $INC{"cf/$_.pm"} for @EXTRA_MODULES;
		4001
		4002	# don't, removes xs symbols, too,
		4003	# and global variables created in xs
		4004	#clear_package __PACKAGE__;
		4005
		4006	info "perl_reload: unload completed, starting to reload now";
		4007
		4008	trace "perl_reload: reloading cf.pm";
		4009	require cf;
		4010	cf::_connect_to_perl_1;
		4011
		4012	trace "perl_reload: loading config and database again";
		4013	cf::reload_config;
		4014
		4015	trace "perl_reload: loading extensions";
		4016	cf::load_extensions;
		4017
		4018	if ($REATTACH_ON_RELOAD) {
		4019	trace "perl_reload: reattaching attachments to objects/players";
		4020	_global_reattach; # objects, sockets
		4021	trace "perl_reload: reattaching attachments to maps";
		4022	reattach $_ for values %MAP;
		4023	trace "perl_reload: reattaching attachments to players";
		4024	reattach $_ for values %PLAYER;
		4025	}
		4026
		4027	cf::_post_init 1;
		4028
		4029	trace "perl_reload: leaving sync_job";
		4030
		4031	1
		4032	} or do {
		4033	error $@;
		4034	cf::cleanup "perl_reload: error, exiting.";
		4035	};
		4036
		4037	--$RELOAD;
		4038	}
		4039
		4040	$t1 = AE::time - $t1;
		4041	info "perl_reload: completed in ${t1}s\n";
		4042	};
		4043
		4044	our $RELOAD_WATCHER; # used only during reload
		4045
		4046	sub reload_perl() {
		4047	# doing reload synchronously and two reloads happen back-to-back,
		4048	# coro crashes during coro_state_free->destroy here.
		4049
		4050	$RELOAD_WATCHER ||= cf::async {
		4051	Coro::AIO::aio_wait cache_extensions;
		4052
		4053	$RELOAD_WATCHER = AE::timer $TICK * 1.5, 0, sub {
		4054	do_reload_perl;
		4055	undef $RELOAD_WATCHER;
		4056	};
		4057	};
		4058	}
		4059
		4060	register_command "reload" => sub {
		4061	my ($who, $arg) = @_;
		4062
		4063	if ($who->flag (FLAG_WIZ)) {
		4064	$who->message ("reloading server.");
		4065	async {
		4066	$Coro::current->{desc} = "perl_reload";
		4067	reload_perl;
		4068	};
		4069	}
		4070	};
		4071
		4072	#############################################################################
		4073
		4074	my $bug_warning = 0;
		4075
		4076	our @WAIT_FOR_TICK;
		4077	our @WAIT_FOR_TICK_BEGIN;
		4078
		4079	sub wait_for_tick() {
		4080	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4081
		4082	my $signal = new Coro::Signal;
		4083	push @WAIT_FOR_TICK, $signal;
		4084	$signal->wait;
		4085	}
		4086
		4087	sub wait_for_tick_begin() {
		4088	return Coro::cede if tick_inhibit || $Coro::current == $Coro::main;
		4089
		4090	my $signal = new Coro::Signal;
		4091	push @WAIT_FOR_TICK_BEGIN, $signal;
		4092	$signal->wait;
		4093	}
		4094
		4095	sub tick {
		4096	if ($Coro::current != $Coro::main) {
		4097	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		4098	unless ++$bug_warning > 10;
		4099	return;
		4100	}
		4101
865	cf::server_tick; # one server iteration	4102	cf::server_tick; # one server iteration
866		4103
867	my $NOW = Event::time;	4104	#for(1..3e6){} AE::now_update; $NOW=AE::now; # generate load #d#
868	$NEXT_TICK += $TICK;
869		4105
870	# if we are delayed by four ticks, skip them all	4106	if ($NOW >= $NEXT_RUNTIME_WRITE) {
871	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	4107	$NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.;
872		4108	Coro::async_pool {
873	$TICK_WATCHER->at ($NEXT_TICK);	4109	$Coro::current->{desc} = "runtime saver";
874	$TICK_WATCHER->start;	4110	write_runtime_sync
		4111	or error "ERROR: unable to write runtime file: $!";
		4112	};
875	},	4113	}
876	);
877		4114
878	_reload_2;	4115	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		4116	$sig->send;
		4117	}
		4118	while (my $sig = shift @WAIT_FOR_TICK) {
		4119	$sig->send;
		4120	}
		4121
		4122	$LOAD = ($NOW - $TICK_START) / $TICK;
		4123	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		4124
		4125	if (0) {
		4126	if ($NEXT_TICK) {
		4127	my $jitter = $TICK_START - $NEXT_TICK;
		4128	$JITTER = $JITTER * 0.75 + $jitter * 0.25;
		4129	debug "jitter $JITTER\n";#d#
		4130	}
		4131	}
		4132	}
		4133
		4134	{
		4135	# configure BDB
		4136
		4137	BDB::min_parallel 16;
		4138	BDB::max_poll_reqs $TICK * 0.1;
		4139	$AnyEvent::BDB::WATCHER->priority (1);
		4140
		4141	unless ($DB_ENV) {
		4142	$DB_ENV = BDB::db_env_create;
		4143	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT);
		4144	$DB_ENV->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7;
		4145	$DB_ENV->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7;
		4146	$DB_ENV->set_timeout (30, BDB::SET_TXN_TIMEOUT);
		4147	$DB_ENV->set_timeout (30, BDB::SET_LOCK_TIMEOUT);
		4148
		4149	cf::sync_job {
		4150	eval {
		4151	BDB::db_env_open
		4152	$DB_ENV,
		4153	$BDBDIR,
		4154	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		4155	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		4156	0666;
		4157
		4158	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		4159	};
		4160
		4161	cf::cleanup "db_env_open(db): $@" if $@;
		4162	};
		4163	}
		4164
		4165	$BDB_DEADLOCK_WATCHER = EV::periodic 0, 3, 0, sub {
		4166	BDB::db_env_lock_detect $DB_ENV, 0, BDB::LOCK_DEFAULT, 0, sub { };
		4167	};
		4168	$BDB_CHECKPOINT_WATCHER = EV::periodic 0, 60, 0, sub {
		4169	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		4170	};
		4171	$BDB_TRICKLE_WATCHER = EV::periodic 0, 10, 0, sub {
		4172	BDB::db_env_memp_trickle $DB_ENV, 20, 0, sub { };
		4173	};
		4174	}
		4175
		4176	{
		4177	# configure IO::AIO
		4178
		4179	IO::AIO::min_parallel 8;
		4180	IO::AIO::max_poll_time $TICK * 0.1;
		4181	undef $AnyEvent::AIO::WATCHER;
		4182	}
		4183
		4184	our $_log_backtrace;
		4185	our $_log_backtrace_last;
		4186
		4187	sub _log_backtrace {
		4188	my ($msg, @addr) = @_;
		4189
		4190	$msg =~ s/\n$//;
		4191
		4192	if ($_log_backtrace_last eq $msg) {
		4193	LOG llevInfo, "[ABT] $msg\n";
		4194	LOG llevInfo, "[ABT] [duplicate, suppressed]\n";
		4195	# limit the # of concurrent backtraces
		4196	} elsif ($_log_backtrace < 2) {
		4197	$_log_backtrace_last = $msg;
		4198	++$_log_backtrace;
		4199	my $perl_bt = Carp::longmess $msg;
		4200	async {
		4201	$Coro::current->{desc} = "abt $msg";
		4202
		4203	my @bt = fork_call {
		4204	@addr = map { sprintf "%x", $_ } @addr;
		4205	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		4206	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		4207	or die "addr2line: $!";
		4208
		4209	my @funcs;
		4210	my @res = <$fh>;
		4211	chomp for @res;
		4212	while (@res) {
		4213	my ($func, $line) = splice @res, 0, 2, ();
		4214	push @funcs, "[$func] $line";
		4215	}
		4216
		4217	@funcs
		4218	};
		4219
		4220	LOG llevInfo, "[ABT] $perl_bt\n";
		4221	LOG llevInfo, "[ABT] --- C backtrace follows ---\n";
		4222	LOG llevInfo, "[ABT] $_\n" for @bt;
		4223	--$_log_backtrace;
		4224	};
		4225	} else {
		4226	LOG llevInfo, "[ABT] $msg\n";
		4227	LOG llevInfo, "[ABT] [overload, suppressed]\n";
		4228	}
		4229	}
		4230
		4231	# load additional modules
		4232	require "cf/$_.pm" for @EXTRA_MODULES;
		4233	cf::_connect_to_perl_2;
		4234
		4235	END { cf::emergency_save }
879		4236
880	1	4237	1
881		4238

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